This is an excellent video and I have posted a link to it on my Facebook page. My message to people who are following the science is that Coronavirus is going to be around for years to come, with new variants appearing every few months. Eventually a vaccine resistant variant will probably evolve, and then even those of us who are up-to-date on our vaccinations will become at risk again. When that happens, it will take time for a new mRNA vaccine to be developed that is effective against the new variant, so we will need to fall back to our early pandemic prevention protocols: masking, social distancing, hand sanitizing, air purification, and lockdowns. So, we might as well get prepared now for something that is likely to be inevitable. This is a good time to equip your family with P100 half face respirators & filters, as well as the other PPE mentioned in this video. The extra PPE is especially recommended for whoever in your family is likely to be taking care of sick family members in the future. Now is a good time to get your pandemic emergency kits together so that you won't be looking at empty shelves when the need finally arises. Thanks Doc for the best mask presentation that I've seen so far. P.S. I have been expecting global pandemics in the 21st century for some time, so we've had all our PPE supplies on hand for years. We even have his & her hazmat suits. It was obvious that a major downside of a globally connected world is the speed at which new diseases can be spread by international air travel. This particular 21st century problem is utterly predictable, but, fortunately, here in 1st world countries we have the means to maximize our personal protection.
Very much appreciate the kind feedback! Your post has not just intelligence, but more importantly it combines it with judgment and wisdom. You see the big picture, look long-term, and think very practically. When you consider these possible scenarios of different mutant strains of covid circulating around for years, I 100% agree with you: an investment in PPE is absolutely essential, especially when these are so cheap and readily available currently. When the next new mutated strain comes around, or if a completely new virus comes on scene, it's good to already have the best evidence-based PPE on hand rather than scrambling to get it.
As someone who has done bioinformatics on the covid genome and runs basic numerical simulations on the pandemic, I concur. In about 30% of the simulations covid has an assortment of alleles making it MERs like and also has immune escape. The peak probability centers around 9 months from now. Utterly depressing. In this case you’re right. Vaccines might not be effective at some point, only fallbacks will be PPE, social distancing. Kinda why I started engineering PAPR masks. We have a disaster closing in on us and most people are so covid fatigued they are pretending the pandemic is over. They just assume covid will go away like spanish flu, but covid is taking a track of short sighted evolution. What it does to its host is of no consequence to its evolution so long as it is infectious enough to escape to its next host. It’s got a far better genetic toolbox than influenza. What’s happening now is largely neutral evolution, this thing is trying as many genetic doors as it can with impunity. It’s a matter of time before it finds the right door.
I was just getting into buying reusable PPEs early 2020. I wanted to go into collection and was just in time. Now I kind of settle down on a set of half face and full face respirators, plus goggles and spare filters. Kitchen gloves work well and last quite some time. Body protection is tough since reusable ones are so damn hot; but I have one anyway. Most other times, I wear long sleeves, pants, and some kind of head coverings. It's so damn hard to convince my wife to wear them. You are among the first and only people who see the coming vaccine resistant strain and like a few of us who collect PPEs, and instead of arguing "oh they make variant strain flu vaccine every year", take actual protection.
"with new variants appearing every few months. Eventually a vaccine resistant variant will probably evolve," Looks like you were right with Omicron popping up.
@@andrew66769 Yea, he was spot on. And with the other commentator doing modeling work suggesting that a mutated strain that had immune escape was inevitable. What's scary to me is that so many people in public have stopped wearing masks b/c they're probably enduring pandemic fatigue, and think that they're okay now since they're vaccinated. Now as we go into the winter season, this is when everyone really needs to be wearing masks b/c Omicron seems to be infecting a lot of vaccinated people, but we still don't have enough data. My hope is that 3 doses of the mRNA vaccines will still be efficacious at preventing severe disease and hospitalization/death. If not, it's going to be another hard winter with thousands of deaths a day :( . Pfizer and Moderna will hopefully have an Omicron vaccine within a few months, but that will take some time.
Thank you. I have never been able to understand why more people don't use these. I suspect it is simply down to social inhibition and fear of looking different. Sadly this social phobia even applies to healthcare professionals.
If anyone is having trouble getting the mask described in the video, you should try an auto paint store. Those masks are the ones we use when working with all the chemicals of painting a car. They are really effective
I’m a scientist, scientific researcher and mechatronics engineer. Most of my friends from school are MDs, PAs and RNs. As educated as they are, they still get some small bit wrong. You actually got everything right. I couldn’t come up with a single point to refine. Gives me hope!
Thank you! There are actually some small things with the video that I'd edit if I could. For instance I said that the respirators of made up of plastic and rubber. I don't think they're made of rubber; when I called 3M directly at one point they told me that the 6200 and the 6800 are made up of thermoplastic elastomer, while the 7500 is made of silicone. They just feel like rubber. Otherwise, yea, I did a lot of research before making these videos, and put a lot of links to the original sources (CDC, 3M). Glad people find it useful and appreciate its thoroughness and rigorous effort to be scientifically correct!
@@SephirothXRA I don’t see any major issues with rubber vs some engineered polymer, the masks should come with cleaning instructions, allergy information, etc. Right now I am working on making a true positive pressure PAPR system for my medical friends. Basically something that’s fire and forget, wear it all day into battle every day, safe even if things get so embattled that it’s not ideally maintained. Almost ready with the prototype. I think some of the best features is a two way automatic intercom so people can hear you despite your mask, unobstructed view of your face and outside surroundings, internal glove box so you can scratch your face and eyes, impossible to overbreathe.
@@weirdsciencetv4999 Yea PAPRs are great. I just wish the ones 3M made weren't so expensive (usually $700-1000 at minimum). There were a few instances where I wore both a p100 respirator AND a PAPR. It was probably overkill but that's probably single-handedly the best protection you can get. I've also seen some people wear N95s within the PAPR units.
@@SephirothXRA I am trying to make my PAPR where it obviates the need for donning other PPE. Right now this involves dual filters, dual blowers, dual batteries, triply redundant sensors and controllers. Also some one way valves to ensure failure of one system wont leak air into the still-working system. Trying to get the cost down to below $500 but it’s a super challenging problem. I learned these suckers are expensive for a reason.
Nice to see a good overview of how to use these effective respirators for Covid. I think a lot of people don't realize that N100 rated filtration (99.97%) is orders of magnitude better than N95 rated filtration, and that the fit of elastomeric masks is consistently much better than the fit of filtering facepiece respirators.
Absolutely. I didn't get a chance to really talk about the N100 masks that 3M makes b/c my video was already kinda long, but they're fairly economical ($10-15 a piece), and great. Here's a sample link: www.ebay.com/p/1500127986 They also have exhalation valves. They can similarly be easily covered with a surgical mask. They are officially offering you the same level of protection as a p100 respirator. The only downside is that they can also be bent and lose their seal overtime, just like the N95 masks. I've had it happen when one time I was wearing an N100 at an airport and noticed a small gap in air that I could feel going above my nose; this was after many months of use. At that point, you'd rather have an N95 with a perfect seal rather than an N100 with an imperfect seal. They do have mechanisms to tighten the straps a little bit, but to me it's still not sufficient. The N100s are more casual looking, but elastomeric are the way to go for sure.
I’ve been using a 3M 7500 series with P100 filters for over a year. My biggest issue is that it’s hard for others to understand me when I’m speaking. I recently learned that 3M released a new halfmask line early in 2020 with a built-in speech diaphragm: they’re called the SecureClick line. The new design also makes it easier to breath, since both sides of both cartridges are filters (4 large exposed filtering surfaces instead of 2). Unfortunately, 3M only allows its sale for “industrial” applications (read: not easily available from major retailers), but I found that industrial supplier Grainger was willing to sell it to me for personal use.
Too bad the system is so expensive compared to a standard bayonet mount respirator especially with cartridges that take replaceable prefilter pads. I really wish 3m made a standard bayonet mount respirator with a speaking diaphragm. Speaking diaphragms are basically a standard feature on full blown gas masks so i really don't get why they're so rare on respirators. MSA makes one specifically for healthcare without an exhale valve but I use mine in industry and really need that valve to keep it from filling with condensate.
3M part 604 adds an exhalation filter OFFICIALLY to this 6200 series half mask. Check it out. This video is great. I wish people knew about NIOSH P100 filters and reusable masks. It's late for them to learn, and yet people still don't know. I blame our leadership for not gradually working on an effort to get a reusable P100 mask in the hands of everyone.
Dude thank you so much for this video !!!! It’s picking up here in Texas and the masks they provide don’t give me a good seal. Thank you for answering all my questions !!
as a part of my hospital's facilities maintenance department, we occasionally work on the isolation unit fans and working on those usually requires us to wear eye and respiratory protection. We are also occasionally required to enter a patient's room to do anything as simple as removing a flow metering valve for medical gasses and swapping it out (a 1 minute fix) to checking the air supply ductwork in the patient room which can take upwards of 30 minutes sometimes depending on the issue. We also work with aerosol chemicals and in hazardous particulate environments like in the interstituals (the floors in between the floors.. usually marked in the elevator or in the stairwell with an i next to the number like 2I or 3I) where we are exposed to whatever the heck they put all over everything to make it fire retardant. I would personally like to have a full face respirator, however my boss doesn't let me bring in my personal one from home (it's CBRN rated) and wants us to use a half face mask when in those demanding environments (also full face anything for whatever reason has the tendency to unsettle some of the patients). I would agree that using a half face respirator is easier for 99 times out of 100... but it's that one time like changing the air filters for the isolation units or going into a particularly hazardous patient room with an airborne risk and droplet risk that makes me desire the full face. I know this is incredibly long winded... but all in all, I believe maintenance personnel that deal both with patients and HVAC units on site should be issued full face respirators.
I have a pool so I once bought a 6300 respirator to use when I add chemicals to the water. When COVID hit I upgraded to the P100 filters (I was previously using gas only ones that block Chlorine for obvious reasons) and I’m glad I did. I’ve always felt safer wearing the respirator vs the mask.
Thanks for the video! I can also say that the half masks are better when you have to talk a lot. If the inside of the N95 masks get too damp through speaking, this also weakens the protective effect at the same time. In the case of the half masks, the valves ensure that the humid exhaled air of the user does not reach the filters. I use the model 7500 with 3M 6035 filter as a teacher and can report on it from my experiences here in Europe. Thanks to your video, I now feel confirmed in my decision to wear a half mask. I wish you all the best and good health! best regards (sorry for my bad english ;-) )
Thank you for the compliments and good wishes :) ! This is true with the half face mask respirators making it slightly easier for people around you to hear your words. It is slightly harder for patients to hear your words with the 6800 series since it does have 2 layers of protection rather than just 1, but it's worth the extra level of protection if you're doing something high risk with someone who has covid. Plus, the full face mask respirator can draw a bit more scrutiny, ESPECIALLY if used outside a hospital setting. That's also a very valid and good point to make with how the exhalation valve prevents a certain percentage of humidified air from getting into and potentially damaging the filter. A lot of my valved N95 masks (which I always cover with a surgical mask!!) still have some breath residue on the inside of them, but they've been better preserved than my un-valved N95 masks, which absorb most of the humidified air I exhale. These masks are built to withstand a large amount of moisture, but at some point the filter may be undermined after repeated usage, but you won't be able to tell that so easily. The elastomeric respirators are definitely the way to go :)
I have been saying this for over a year. I barely made it back to Canada from Peru before the lockdown last year; and the first thing I did was pull out both my 3M full face and half mask respirators. I’m just the common citizen walking around wearing my 7502 and 2097 filters. I don’t cover my exhalation valve as I don’t get close enough to people to intubate them. Thanks very much for the confirmation. Look into UVC ventilation systems and FarUVC lighting. It will help reduce transmission.
Great video. 3M 'Quick Latch' solved my exhaust valve problem. I trim the edges of a medical procedure mask and cut it in half crosswise. Lift up the quick latch and place the half piece over the exhaust valve and close the latch. On my other half face 3M respirators I used to put a medical procedure mask vertically instead of horizontally over the valve. The ear loops go over and under the back of the mask. I find the 3M 2296 and 2297 grey pancake filters are slightly better. I'm in Canada and had to buy 'Made in Canada' 7093 filters in the USA. I started wearing a N100 2nd week of January 2020 and upgraded as time went on. I've been wearing respirator masks for 35+ years, always 3M.
Perhaps you should also consider MSA Advantage 290. It is the first P100 elastomeric respirator that does NOT have an exhaust valve at all. This seems superior to me because if you just use surgical mask to cover the exhaust valve, some of the air the wearer breathes out still escapes. I know in theory, it is the same as someone wearing a surgical mask, but I have doubts that a surgical mask wrapped around an exhaust valve of a mask works as well as one on a person's face for blocking aerosols (they are designed for faces, not mask exhaust valves after all). And sticky taping surgical mask material over the entire mask exhaust valve wouldn't work either, as the increased pressure inside the mask when the wearer exhales may cause the seal to slightly break (so that the mask no longer functions as P100).
Or you could use a 604 exhale valve filter and both stay in the much more ubiquitous 3m ecosystem and not force your inhale filters to pull double duty... Just saying.
Thank you for a very thorough coverage of these masks. I am surprised more people are not using them. I plan to use one for the fire smoke we are now experiencing in Alberta Canada.
Most people are just not aware of elastomeric respirators in general. Even early in the pandemic, the craze was all about N95s, and they were near impossible to find. If people knew about p100s, they would have been in shorter supply. You either do your own research, or hear from a friend/colleague, etc. I wish more people in general would be okay using N95s though. I see a lot of people using KN95s, which can be great if they're not counterfeit. Cloth masks and surgical masks work great when everyone uses them. When you have a virus with an Ro (R-naught) of 6-8, a surgical mask just isn't going to offer you the same protection as an N95. Most people in public will look at a p100 and laugh =P N95s, p100s, p99s, N100s; pretty much any of these are great in general. p100s are probably better for wildfire smoke. Frankly, even if one is going underneath one's house, doing a lot of household work with exposure to dust, even an N95 is fine..
Glad you liked it! Yea, I tried to be meticulous and thorough with a lot of the logistics that are hard to find answers to. I accumulated a lot of this knowledge over many months of literature review, reading various resources on Reddit, CDC and HHS fact sheets, and then amalgamate it into one, useful video :)
@@SephirothXRA We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Having emphysema i've been using 3m 7500 half Face Respirator with 3M P100 Respirator Cartridge/Filter 60923 as my Doctor recommended, i thought this was overkill but now i know better. now that delta is here this is even more important.
Bro - wish you’d made this last year so I could have sent your vid to all my fool friends laughing at me for me P-100 (literally the one you use, minus the goggles). I had mine from before the pandemic (for painting, welding, grinding). Got a couple more for my wife and family. Sure turns heads in the grocery store. People never believe how easy they are to source and to wear
Thank you for the compliments! Yea, wish I had gotten around to making this last year, as well. I had circulated some hand written guides on these respirators in my local medical community, but wanted to eventually make this video once I had more time so that people globally could watch and learn about these respirators. I do feel that awareness of these masks is genuinely important and I wish more people out there could learn about them I found that making youtube videos is not as easy as it seems. This video was originally ~29 mins, and I cut out almost half of it. 16 minutes still feels too long, but I really tried including genuinely important information, and avoid rambling too much. Careful where you wear them. Airlines explicitly ban respirators/masks with exhalation valves. Their policy is a bit myopic b/c even if you cover the valve, if they find out that your mask has a valve (even if it's covered), they will not let you get on the plane. It's as silly as saying you can't come on a plane with a surgical mask b/c you still have exhalation valves for your body (a nose and a mouth), even if you're covering your nose/mouth with a mask. I've seen some people put extremely large neck coverings (or like large balaclavas) around their respirator. You'll look a bit funky having a giant cloth covering around your face as the respirator will make the cloth covering really protrude from your face, but people won't see the respirator. They may still stare a little bit, but not as much as wearing a regular elastomeric respirator. So if you ever need to fly and don't want airlines seeing the respirator, consider covering the respirator with this balaclava; you're then knocking two birds with one stone by both covering the valve as well as preventing people from seeing what's really underneath. www.amazon.com/gp/product/B08GPBDNSY/ref=ox_sc_act_title_1?smid=A1DW97D2ANEORR&psc=1
I wear mine to shop too and have been just short of being verbally harrassed. I especially wear these into hospitals, clinics, urgent care, etc. with evil stares and mockery. But time will show how effective these masks are.
Thumbs up. 1. Very indepth , spoke slowly 2. Showed the two masks 3. Explained fitting and particle asobtions 4. *** told me there's small sizes for me 5. Not to many powerpoint slides going high speed 6. Informed that lysol wipes degrade integrity of N95 but nor the p100. Thx
I was walking around with a 3m half respirator and the pink p100 pancake filters. They were super cheap at my local paint shop when all the n95 were over priced or sold out.
Something to add concerning the difference between the 6200 half-mask vs the 6700/6800/6900 full mask is that the full face masks have both inner and outer face seals, so you get a safer seal to the face, and that is a factor that wasn't mentioned when discussing how the 6800 offers eye protection.
I use 7502 respirator with 7093 P100 filter. Might get the 7093C next time as it neutralizes odor. I put a hair cap or a shoe cover over my respirator during attending to my bedside patients so it covers the exhaust as well
Thank you so much for the video.I am using 3M 2091 respirators for seeing Covid19 patients.I am from Nepal.I feel so protected after watching your video.
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
I have been using the 3m half face respirator with 7093 catridge....first 2 days it was fine but I later I started observing a click or a slight pressure hold for 1 second before the air is exhaled...the seal is not compromised but a pressure developing and the release is giving a click type feel..anyone has observed this?
@@SephirothXRA very true. Thanks for the video! It was helpful for a situation I'm in now...wanted to know if the one's I had were good for this purpose.
Another respirator to check out. The 3M 6500QL, this model has a quick release system built into the mask, the lever on the QL is good for securing a folded N95 over the down facing rebreather
Thanks so much for demonstrating this on these masks. I myself have been wearing the P 100by 3m since 2020 covid 19 pandemic started. Yes it is comfortable, easy to breathe. You can wear it up to 3 to 8 hours. Change the filter every 4 to 6 months. It's unfortunate that these masks are not advertised or talked about. I assure you , you will feel more confident wearing one. To also find them Uline a Canadian company. Check online. You will be happy that you did purchased, it is worth it. Good luck all!!
Excellent Video Dr. I recently got a Respirator Half Face Cover which came with a pair of 2091 P100 filters. I upgraded to the more robust 3M P100/60926. WIth all the wildfires out Southwest USA, I think the 60926 will improve air quality overall. I upgraded from N95 with the Value to P100. I don't work in medical field so I went to P100 to not hoard the N95 supply needed by medical professionals. Thanks for this video. Some people wear these flimsy cloth masks over their chin. That's dangerous.
I kinda wish that 3m would develop adapters for the TR-600/300 papr so as to accept bayonet style filters as well as 40mm threaded filters, also I kinda found that the TR-600/300 papr use proprietary batteries and one would hope that they create power adapters to accept dewalt power tool batteries as well as standard off the shelf batteries, Kinda off topic, but your video was very detailed and it helped me determine what equipment to buy as an insurance policy in the event of another pandemic surge, I hope you make more videos such as these! I appreciate your insight and your dedication to the medical community! Salute!
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
GVS offers a mask without exhalation valves, unfortunately not in Europe ("Elipse P100 with Source Control NIOSH Respirator"). I am using a Sundström with P3/P100 mask since the beginning of the pandemic and it actually protected me from infection - I had contact to infected people several times. No N95-mask was able to fit to my face.
That's good that there are now ones without valves, incase someone wants it like that. Personally I find it better with the valve as even if I cover the valve with a surgical mask, the resistance to exhalation is far lower than compared to if I have to exhale through a p100 filter. Not to mention, the moisture from your breath can affect the p100 filter overtime if your exhaled air goes through it thousands of times.
Great video and overview, Doc! I had one concern and it's where you stated that these filters can last over a year after initial use. 3M states "Once opened, maximum use time is 6 months (even if not used). The carbon will absorb contaminants from the general environment." I tried both of the 3M half masks but prefer the JSP Force Typhoon 8 for just P100 protection. Thanks!
Hey Mitch, thanks for the feedback. Yea, once it's opened, probably best to try and keep them in zip-loc bags, or something where they're not exposed to air flow. Even if not in active use, air particles are still constantly going through the filter media. I would be genuinely curious how the filtration of p100 filters change over the course of being left outside over months/years. One time when I actually called 3M to ask a bunch of questions, I asked them about this subject (i.e., even if expiration date is 5 years, are we not supposed to replace them 6-12 months after opening them). They reassured me and still stuck with the whole "use them until they're subjectively harder to breathe" advice. After watching some other videos, it appears that this is more important for ones with an activated carbon filter that protect against gases and vapors where exposure to air over time will damage the activated carbon filter. If it's just for particulates, even if it's left outside for a while, it won't affect the filter that much. So basically: for particulate filters, use them until they're harder to breathe. For gas/vapor filters, you basically use them until you start smelling the actual gas/vapor, which then tells you that the activated carbon filter is not working as well as it used to. For people wanting protection from covid, you really only need the particular filter. 3M had originally written how these filters were meant to last a "pandemic," which was kind of vague admittingly. I'm under the impression that even if one used a 3M filter 1-2 years after it was first opened, it'd probably still get you pretty decent protection, but ultimately best to go with what the manufacturer recommends. Some studies I've read showed that N95s (which are supposed to do 95% filtration) will sometimes only do about 90% filtration after many months of use. So I'm inclined to believe that using a p100 filter will be fine after months of use b/c of how much more exponentially protective it is than N95s. Thankfully, these filters are quite economical, and more healthcare providers are getting vaccinated.
@@SephirothXRA I too am curious on how a P100 filter will last, sitting outside for months, and not being used. I honestly don't even think 3M knows, which is probably why most of their product longevity answers are always so vague. I guess like all brands, there's really no definitely answer; just "replace it when it's hard to breathe." I fully support the use of half-mask for COVID protection, it's a huge cost-savings over disposable N95 masks. Yes, the user will have some inconvenience to maintain and clean the mask but still, better protection and lower spending is hard to beat.
theres a few things you mis understood about the n100 (P3) and the n95 (P2) is that the 95% filtration is a grade it means for stuff that is thermally generated they can't pass through (Not exactly what covid is but it'll stop dust from entering the lungs. n100 (P3) is a alot overkill version of the n95 however you can only get that level of protection with a full face respirator otherwise you get n95 (P2). n100 is designed for Highly toxic particles (Asbestos, Beryllium and silica Dust) Not saying you can't use a n100 mask for covid just a bit overkill and you don't need that level of protection.
Yea, N95s are not wrong to ever use with covid 19 patients. The seal of the elastomeric respirators is just so much better than what a single N95 can provide b/c silicone and thermoplastic elastomer are not as degradeable and subject to damage as the material that the N95 masks use. All N95s are NIOSH certified and pass stringent tests, but ultimately I still subjectively feel that some of the masks have less stronger seals than others. One could also use N95 filters attached to the elastomerics and it would be fine. But if one is already using an elastomeric, one should rather just go for the filter that filters 99.97% of particles at the level of 0.3 microns compared to at least 95%, if it's your life on the line. Some N95s will actually filter 99% of particles in real life tests, but there can be variability, including with imperfect seals. Lastly, and as far as I know, there is not an acute shortage of p100 filters out there, so this is why I feel that wide adoption of p100s would still be fine. P100s are essentially the same things as a HEPA filter.
UV is not the ideal surface disinfection agent because light travels in straight lines and does not go into shadows and crevices - it does not penetrate mask materials or cloth at all. PPE is another matter. There are UV boxes with UV in them for this purpose, but again, UV not ideal for masks due to spaces it cannot reach (e.g., inside the actual p100 respirators themselves). They will be expensive - intended for hospitals. Either 254 or 222 nm works, for air and surfaces, but 222 is expensive and not really available. It can be used in occupied rooms. 254 nm is used in the upper room for air disinfection. Nothing you buy on Amazon will be useful - wands are low power - harmless but not helpful. I have not seen any method for home use, but it should be possible. In short, it's better to use disinfectant wipes or clean them according to 3M's website: multimedia.3m.com/mws/media/473937O/3mtm-cleaning-reusable-respirators.pdf
Thank you for the compliments! There are lots of videos out there on elastomeric respirators, but I've found that few explain them in larger context (i.e., delineating exactly what p100 means in comparison to N95s, and talking about the different model numbers as it relates to healthcare workers). I'm going to write a more encyclopedic web article on these soon, too, which I will put in the description.
I have a full face 3M from working with epoxy I'm going to buy a half face, size Large fits perfect, so I'm going to buy the same Thanks for the video As you say, I think it's good for people to keep in mind that 3M has been doing this forever and their filters are widely available
Yea, there's a lot of people out there who've been using these masks for years who are grateful to already have the equipment and know about them. They are also useful for numerous other things as well, not just covid-19 prevention (you can use them if there's a dust-storm or wild fire smoke, or if you're going under your house/apartment and are concerned about pathogens/carcinogens in the air, and there's even filters useful for painting). I think it's always good to have these respirators incase something even worse than covid-19 comes around, too.
I would consider filters that are rated for vapors. For instance, the difference between the 2091 and 2097 filters (both of which are p100 rated filers) is that the 2097 filter vapors. I noticed that with the 2097s, I didn't smell much car exhaust in areas with a lot of cars, but as soon as I removed them, I could smell car exhaust. There might be larger filters which are better (like 60921s), but they would be far more bulkier. There's a lot I don't know about this, so take this with a grain of salt, as I'm speaking from personal experience.
Just one question. Why doesn’t 3M manufacture half face respirators minus the valve? The whole setup looks really messy with surgical mask on top of half respirator mask 😅
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Really good video. I have a half face mask size large but its so uncomfortable. It has to be so tight when I do the exhale test to ensure no air seeps out that part of the mask on my nose or straps around my ears dig into my skin. Any tips on that? Am I tightening it too much?
Great masks. They absolutely seal to your face and allow way more airflow than typical N95 mask. Example: Typical N95 worn with glasses and faceshield fog up both to the point where you can’t see too well in front of you or breathe too well. Half face respirators worn with goggles face shield under exertion, no fogged up view and still able to breathe.
When this madness first began in 2020 nobody knew what was going on I was wearing a p100 in public because I was concerned about a real pandemic......I don't wear a mask anymore for covid worries... I still wear either n95 or p100 at work for asbestos and fiberglass.
No point to try and "cover" the exhalation valve with a surgical mask. That's improper usage of said surgical mask and you can clearly see the huge gaps all around it.
Fair thoughts, but couple of things from my end. The only reason to cover the valve is to prevent you from giving covid to those around you, incase you were unknowingly infectious and asymptomatic. If the patient already has covid, this concern is not as relevant. There is maybe some theoretical concern if you happened to have a different variant than the patient, that you could possibly worsen their infection if they get two different variants, though I've yet to see any evidence on this, and it's more theoretical. So in some regard, a hospital infection prevention/control division could say even if the surgical mask does not have a super tight fit on the valve, that it's not a large concern. And some could even say you don't need to cover the valve with covid patients. As long as you've wrapped the mask around the filters and it's generally covering the valve, it's fine since you're pretty much only using it for the covid patient and then taking off the respirator once you've exited the room. Anyone wearing any stand alone surgical mask on their face will always have some gaps around their face anyways. Furthermore, if you look at page 13 on this document www.dir.ca.gov/dosh/coronavirus/Elastomeric-Respirators-Healthcare-Workers-Brosseau.pdf You see how when people wear a surgical mask, air leaks from surgical masks go in all directions, including behind the head. With exhalation valves, they're only going in one direction, and if you cover the valve, and even if the gap being covered with a surgical mask is slightly larger, it's not a big deal. Especially if the person wearing the respirator is already vaccinated against covid. So in short, covering the valve relatively well is always going to be better than not covering it at all, but covering the valve probably isn't even necessary with covid patients. With my gear that I personally use, I also have a large face shield covering my entire respirator+surgical mask, so the shield is also blocking a lot of exhaled air. But if one is so genuinely concerned about this, there are other standardized strategies to make the surgical mask's seal around the valve tighter, which I didn't talk about in my video. One can simply use some tape to fasten the surgical mask around the valve. It's one extra step compared to just putting on a regular old N95 mask, but for me it's a very simple adjustment that is completely worth it b/c of getting 99.97% protection rather than 95%.
But yes, if someone intends on using elastomeric respirators outside of a healthcare setting (like on an airplane, or in a grocery store), they can be a little more prudent on ensuring the surgical mask covers the valve a little bit better, and can use some tape if need be. At the end of the day, covering the valve with surgical mask like in my video is far better than not covering the valve at all. I've seen a lot of people fall into the flawed mindset of "I don't need to cover the valve b/c I'm unlikely to have covid," which is just as bad as the person who says "I don't need to wear a mask b/c I don't have covid." If everyone thinks that, then all of society is worse off, and it inevitably leads to more infections. It's like the flawed mindset of people who decide not to vote in elections b/c they decide that one vote won't make a difference, when in reality everyone's votes collectively make a difference.
had a question for you I am trying to work on some home made gas mask thing as I know its a home made product I understand I cant sue if it fails with that that out of the way I ve got a couple of questions for you may be you can answer? it would seem theoretically if there were a way to jerry rig an N-95 which seems to be the current recommendation for the current poor air quaility issue would you think assuming there were a way to do it addtional benefit would be provided if there were a way to keep the filter on the mask as close to the ground as possible? thoughts please thank you!
Now this may seem a little gross and it might grow some people out but if you take a little bit of Vaseline and put it around the face nozzle seal of the p100 respirator it will act as a gasket. Basically you're making grease seal between the mask and your face. The only problem is that it doesn't last forever probably good 30 minutes
Nice info on respirators. Not for lay people or community use. Because most of them have inhalation filters, and no exhalation filters. Meaning the wearer is protected from the surrounding, but other people outside are not protected from the breath/sneeze of the wearer. This is why CDC discourages masks with exhalation valves for public use.
Did you watch the full video? If you look at 6:26 in the video, I talk about how you can cover the exhalation valve with a surgical mask, either by wrapping it around the filters, or using tape if you want. Also, if you're seeing a covid 19 patient, the patient already has covid, so you really don't need to cover the valve anyways, b/c even if you're infected with covid-19 without realizing, you can't give it to them through your own exhaled droplets since they already have it. Obviously if you're seeing a covid-negative patient, or if you're out in public or on an airplane, then you need to cover the valve. CDC hasn't formally banned masks with exhalation valves. They don't recommend them to the general public. But if you do research, you'll find plenty of resources where CDC and HHS discuss the use of elastomeric respirators in emergency healthcare settings. There are plenty of roles for their use with covid-19 patients, which is the focus of this video. I don't discuss the use of respirators for use in the public, though you certainly can if you cover the valve. More here: files.asprtracie.hhs.gov/documents/elastomeric-half-mask-respirators-and-powered-air-purifying-respirators-in-healthcare-and-ems-settings-fact-sheet.pdf www.cdc.gov/coronavirus/2019-ncov/hcp/elastomeric-respirators-strategy/index.html
@@SephirothXRA I agree. For doctors seeing Covid positive patient or those HCWs working in Covid positive wards, the primary goal is to protect the health care workers. So respirators can't theoretically introduce extra harm, assuming the opposite person is already a patient. Default design of a respirator is biased towards one way protection. For healthcare settings however we need 2 way protection. And as you said, one could use a piece of mask or even better - to use a exhalation filter, which by the way is not that common to find due to the design bias. The link you shared also makes a mention of this: "...Elastomeric respirators with exhalation valves should not be used in surgical settings due to concerns that unfiltered air coming out of the exhalation valve may contaminate the surgical field." www.cdc.gov/coronavirus/2019-ncov/hcp/elastomeric-respirators-strategy/index.html EDIT: Edited my earlier comment based on your input. Thanks for your comments.👍
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Gas masks can work, too, in addition to p100 masks. If you don't mind me asking, how much did you pay for your gas masks, and how long do they last for before you replace the gas canisters/filters?
@@SephirothXRA got them both under $200 from private sales. I use CBRN filters (M61 filters for the M50 and 3M FR15 for the M40a1). I switched 3m FR15 filters every two months but they can go longer. Just got my M50 recently and plan on replacing my first pair of filters according to the life indicator (they turn blue to show that the filters need to be replaced based on humidity) When not in use, I usually seal the filters in bags so they don’t clog with dust when on standby
I would love to wear a P100 style mask if it wouldn't get me weird looks for being overboard paranoid... wearing a KN94 or N95 is already the norm here, but anything that looks like you are about to start a fight as a Batman villain... still a bit out there
I have never cared about what other people think of me. Most people don't really know squat about much of anything, especially this virus. Their uninformed opinions are irrelevant. I did my online research on SARS-CoV-2 and the medical science says "if you're serious about keeping this virus out of your lungs then get the tightest fitting mask with the best filtration that you can afford & comfortably wear for long periods of time in high risk social situations. For me that was a 3M half face respirator with P100 filters. I wear it everywhere, including at the supermarket, and since I mind my own business I don't even notice if anyone stares or makes any comments. NOTE: when some future variant has immune escape mutations, our existing vaccine immunity will not protect us. We will be back to square one. The people who survive that variant until a new mRNA vaccine becomes available will be those who mask up effectively & follow CDC respiratory virus safety protocols. The science is not all that difficult to understand and the research is all online & free. Protect your health & your life. Ignore the stares of the ignorant.
great bit of information, however with the new variants it would be good to see an update of how really efective these respirators have been towards keeping the people wearing them safe , the reason i am asking is because 3M does not stand behind their product when it comes to viruses etc.
The expiration date is 5 years from when they're made. The point at which you need to replace them depends, but usually happens when it gets subjectively harder to breathe. This will happen the more you use it. If you use it 8 hours a day everyday, for instance, you will need to replace it much sooner than if you use it 2-3 hours a day a few days a week. The more particles that get stuck in the filter, the harder it will be to breathe (but also the better it will protect against virus particles). I've seen people using it for 6 hours a day, 5 days a week have their filters last anywhere from 3-6 months. It really depends. 3M writes on their website that a filter pair will "last a pandemic," which is kind of vague but basically means they will last you many months.
Its protection against covid is great. Its filtration efficiency is 99.97%. They're better than the n95s that healthcare providers use for covid patients. These are like standard n95s in that they're technically disposable masks. The more you use them, the more the seal can be compromisd over time. This isn't to say you can't use them. But you'd eventually use a fresh mask after some time.
Dr. my sister just finished her nursing degree and she is joining a Covid 19 ward in a Florida hospital and would like to inquire about the efficiency of P100 filters overtime and in ventilator settings! Provided she can maintain a good fit, how much she is really protected from the virus aerosols and larger droplets and for how long of continuous exposure in a Covid unit!
Also, you should cover the exhalation valve because you don't want to give an already sick patient the cold or the flu in addition to their COVID infection.
I see your point. One of the good things with colds and flus is that they have very short incubation period, and they are spread by droplet, not aerosols. You usually only spread the virus when you have symptoms, which doesn't make the need for wearing a mask as significant. If a healthcare provider doesn't have symptoms, it's highly unlikely they're spreading a flu or cold virus. The problem with covid is that you can have no symptoms for 4-7 days yet still be spreading the virus, so that's why it's important to always wear a mask. I've cared for patients with bacterial pneumonia in the hospital, and even if the same risk applies (that you give them the cold or flu, and they would theoretically do worse), we healthcare providers still didn't routinely wear masks around them to prevent them from getting cold or flu b/c it's just not that common to be asymptomatic and contagious with one of those viruses. Some of the other instances before the pandemic where we wear masks around patients even if they don't have an infection is if patients are neutropenic, or have very low white blood cell counts and very weak immune systems, where you might accidentally breathe bacteria into their mouth, and then those bacteria cause them significant complications. So healthcare providers would wear a mask at all times around those patients. Regardless, I still cover the valve anyways, and am not saying that we should stop covering it. But mostly that the risk of transmitting other viruses like the flu is low. One would be more concerned if someone had alpha coronavirus, and then a healthcare provider who is asymptomatic gives the alpha covid patient the delta variant.
@@SephirothXRA Man, I honestly have no medical experience. I just noticed that we act as if no other diseases exist other than COVID. But I appreciate your explanation as I learned a lot. In addition, i have moved on to 3M respirators from KN95's for general use in public. Here in Idaho, we have a low vaccination rate, yet it appears as if we have 100% vaccination rate if you go into a store or a gym. To me, a respirator basically gives the middle finger to everyone as it 100% protects me, but it doesn't protect anyone else -- because well... Nobody wears a mask for me. My only concern is that respirators may be made illegal once that comes to light. As it's the inverse of a surgical mask.
@@telengardforever7783 Yea, I feel like if no one is wearing a mask, they shouldn't be criticizing you for having a mask with an exhalation valve. Whenever I wear one of my elastomeric respirators out in public, I use this neck balaclava from amazon to cover it. It's nice b/c people won't see the respirator at all since the balaclava is so large. They will still see some prominence protruding from your face, but it certainly won't draw as much public scrutiny as wearing the respirator by itself since they do look so unusual outside hospital settings www.amazon.com/gp/product/B08GPBDNSY/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
One time I boarded an aircraft and was covering the valve with a surgical mask, and the flight attendant actually told me that even if I was covering the valve, I'm not allowed to wear it b/c of the fact that it has a valve. To me, that policy is absolutely silly, and has extremely flat logic. If a human is covering their nose and mouth with a surgical mask, no one tells them they can't enter b/c they still have an exhalation valve (nose and mouth), evven if it is being covered. I didn't fight it at that time, but it was an extremely useful experience, b/c now I know to just put the balaclava around the respirator, and they won't know what's underneath. The reasoning should be: if you can't see the valve (whether it's someone nose, mouth, or mask's exhaust port), it's not a problem at all. As long as you're covering the valve with something, it's fine. There should be exceptions (if you're covering the valve with a mask), rather than just a blanket policy that does not consider reasonable counter-points.
@@SephirothXRA That is an excellent solution. It would have never occurred to me to use a balaclava to hide the respirator. I realize I will have to convert the respirator to a N100 by removing the one-way flappers and duct taping the exhaust, but without the balaclava, I know I would still be forced to remove the converted respirator. With your idea, I would basically have the most powerful facemask possible on a flight -- or in any other situation in which a respirator is illegal.
I thought masks are supposed to protect “others” from your exhaled air. These respirators don’t filter the exhaled air but only the inhaled air. These masks actually exhaust air either directly to the front or down. Wouldn’t that blow your air directly into your patient’s face?
I am going to the links in the description but none of them mention in the sales adds they are for defending against Covid 19? I need something for work and I am done with those stupid exam masks.
Anything that is rated N95 or p100 by NIOSH is appropriate for covid-19. It doesn't have to specifically say in the mask description that it's okay for covid. Anything that is rated n95 or p100 is filtering at the level of 0.3 microns with electrostatic fibers.
Congrats! But one question remained slightly unclear to me. Does the electrostatic properties of 3m et al filters add an extra protection to their already p100 grade or just helps it to reach such a grade with easier breath? The latter was what I could understand trough my searches. So happy to watch this video, you can't imagine. I came to the same conclusions and choices right in the beginning of the pandemic, through thorough on line research, starting from zero! Though a retired MD I supplied this solution to my own family and my own 'civilian' use, and couldn't understand why it's not been advised to our front line colleagues, specially in the masks shortage period.
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Hello Rahul How are (Gas Cartridge Particulate 7093), (Multi Gas/Vapor Cartridge 60926) and (Organic Vapor Cartridge 60921) P100 Filters are different? Which should we use for better protection against covid?
Silicone by far. Technically the 6200 is thermoplastic elastomer while the 7500 is silicone. In the video I said rubber b/c that's kind of what it feels like; this was before I actually knew what they were physically made of.
All employees are required to be fit tested to prove they have the lung capacity as well as the correct fit. You are recommending equipment used for fumes, dust and gasses, while recommending people intentionally block the exhaust. You should consult Fed OSHA before recommending medical advice on this one. Here is a question, have you been professionally fit tested and trained in wearing a P100 respirator?
Sir, is the round P100 good too once they are wet with sweat? I use UV to sanitize those though. Planning to change to the plastic one if stocks are available in my area! Thank you for the nice video. Keep safe. ❤️🙏🏻
For use in Dentistry, I feel 3M 6800 is a better option cause of aerosols. 3M 6200 feels better to use but I am not able to find a Aerosol proof Gas tight Googles
What about swimming goggles? Honestly I feel like the seal on the goggles is not as crucial as the mask. As long as it's covering most of the eyes and is sealed relatively well, should probably be fine.
I have been trying Swimming Goggles. Excellent seal but uncomfortable for long duration use cause of its vacuum effect. I have also faced fogging issues in them. So have decided to use the 3M 6800 full face Respirator from now on for Aerosol Generating Procedures
Just adding the simple fact that P100 is rated to .3 micron and covid molecule is .14 micron. Just sayin.. The question I always ask is WHY do doctors never seem to mention this simple fact? ?? Have worn full face masks for work for decades and have been had to take OSHA classes on masks. Not going to say what I would like to tell you about the ability of masks to filter covid.
This video addresses the concern you raised. Small particles still get caught up in p100 masks bc of brownian motion, even if its smaller than the official rated filtration. In a 16 min video I do not have time to go over the physics of these masks, though I have had this video linked in my video description since it was published. ruclips.net/video/eAdanPfQdCA/видео.htmlsi=038sPh0jCIXZ3L4h Furthermore, covid does not stay isolated as a viral particle. It is usually bound to particles larger than it (respiratory droplets, aerosols, proteins), and it is those larger particles that usually get caught up.
Virus' does not travel naked in air, it is carried in aerosols or droplets. HEPA/P100 filters 99.97% at 0.3 µm, which is deemed the most difficult particle size to filter
Hi have you tried the 6035 (white cartridge)? Do you know if those were the best for hospital setting? I’ve heard that it is the “medical grade” cartridge.
Seems the 6035 are pretty similar to the 7093 filter. As long as it's rated p100 by NIOSH, it should be fine for a hospital setting with covid patients.
Good day Doctor! I am also a doctor. How could a 3M filter (which can only filters 0.3 microns and bigger) protects you from the SARS COV-2? Knowing that the virus is 0.1micron in size. I think N95 mask is still the best protection to wear because it can filters 0.3 microns or less. Stay safe!
The p100 and n95 filters use very similar material; both are officially rated to block particles greater than 0.3 microns by NIOSH. The difference is that the p100s tend to have much more thicker and dense filter amounts than n95s, which is why they block 99.97% rather than 95%. The SARS-CoV2 virus is is indeed smaller than the N95/P100 filter size, but the virus always travels attached to larger particles and respiratory droplets that are consistently caught by the filter. There is never a naked virus floating in the air or released by people. Most respiratory droplets from humans are greater than 1 micron. However, BOTH filters have a couple of mechanisms to block particles smaller than 0.3 microns, which I talk about below. Even if the particles are smaller than the N95/P100 filter size, the erratic motion of particles that small (which is called Brownian motion) and the electrostatic attraction generated by the mask means they would be consistently caught as well. These two principles are demonstrated in the video below. Both N95s and P100s use these mechanisms, so there's no basis for N95s blocking particles smaller than 0.3 microns but P100s not since both use the same filter material and the p100 has more of that material. ruclips.net/video/eAdanPfQdCA/видео.html These principles are also discussed in the USAToday article I link below which cites academics and experts in these fields: www.usatoday.com/story/news/factcheck/2020/06/11/fact-check-n-95-filters-not-too-large-stop-covid-19-particles/5343537002/
Great video! I'm getting some FFP3 masks, do you have any recommendations as to eye protection while using FFP3 masks? I know Covid droplets can also enter through your eyes.
I use Dewalt Safety Goggles (link is at the bottom of my video description). I then recommend putting a face shield on top of both the eye protection and the filter, ideally one that even covers the filter (the link to the face shield I use in the video is also linked at the bottom of the video description)
Great video! Reiterated my belief that ,respirators do offer the best protection I've used both the half face and full face respirator (I am a dentist) Personally the full face one makes me feel more secure Only complaint,talking is a BIG issue! Any tips?
lean to use your hands when useful for added emphasis. Writing on Pad Paper like underwater will also help a lot plus texting on the phone will also be helpful just texting and showing the text to the other person is one trick I use ... you don't need to send the message anywhere... just typing it is what you need to do
Half face mask will be best for talking and people hearing you. Full face masks will make it the hardest for people to hear you. You can consider covering a half face mask and eye goggles with a faceshield as I describe later in the video (linked below too). That might make it slightly easier for ppl to hear you, but I'm honestly not too sure. I've actually yet to use the full face mask with covid patients, even though I have it and it cost me $120. ruclips.net/user/redirect?event=video_description&redir_token=QUFFLUhqbTF4Q1dfUFlfU0w0dmZIdmpkZVV6LWgwZjFnZ3xBQ3Jtc0tsMGZTc3M4Q01GdXhxNDVKTm1SM3RCd3c5UFZySTgzMFloVzNBdWpNTFVkYkdsSldyNnRSR3dObHVlWFVDVDRrMHB5aERLNHpYU3ZFSWRMa2xXUi1FUTJFWGtlckVzYm5lT210RmpmWnZ1T2NKWU13NA&q=https%3A%2F%2Fwww.amazon.com%2FUvex-Bionic-Polycarbonate-Anti-Fog-S8510%2Fdp%2FB001VY3ACE%2Fref%3Dsr_1_5%3Fdchild%3D1%26keywords%3Dbionic%2Bface%2Bshield%26qid%3D1612310300%26sr%3D8-5
Hi Doc, currently i'm using the p100 filter also.. but, i am just wondering : does the filter N95 on 7502 half face respirator series enough to protect us from covid? Some people use the N95 filter on the catridge, and then they put a surgery mask on the catridge (double layer for extra protection). What do you think about it?
What type of N95 filter are they using? Is it the 5N11 cartridge that is shown towards the bottom of this link (Under the Blue Tab Prefilters for Cartridges)? multimedia.3m.com/mws/media/40744O/3m-respirator-cartridge-and-filter-selection-poster.pdf?fn=CartridgeSelectionPoster_English&fbclid=IwAR1bgxyiA6LvPjiPYos0oSpH9hUVqXH1yz2emXyEQYXlEPBnTb3bfuZHIwU Generally N95s are great for protecting against covid, and are recommended by most government agencies and FDA. When you ask if I think they're enough to protect from covid, I would say yes, n95s are just enough, though we should all go one step further and get the best possible protection with p100s. I think a p100 is going to be better than putting a surgical mask around an N95. If you also look at my video, I demonstrate how I put a large face shield around my p100 respirator; I think this is better than putting a surgical mask around the filter.
@@SephirothXRA the catridge series is 6001 CN (Organic Vapor) combine with 5N11CN . Is it enough to block the covid 19 virus? Also i would like to ask you about the P100 filter.. as we know there is so many fake product at the market. In my country (Indonesia) its quite hard for me to find a trusted seller (i've contacted the 3M respresentative in my country but their stuff sold out). So i bought my p100 filter on another online store. it written made in canada with chinese character (7903CN). My point is : could you tell me how to spot the fake and the original 3M filter please 🙏
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Thanks! I took off the blue film from the front months ago. I'll have to check and see if there's one on the back side (or the side that faces my face). It's an anti-fog material (not the regular clear one) so not sure if the blue tint is part of it for that reason. Will circle back around once I get back to it.
@@user-es3vg9mn5e Thank you! I examined the face shield again. Couldn't find anything on the inside part of it to peel off. Oh well. Still allows me to see through decently well enough.
This is an excellent video and I have posted a link to it on my Facebook page.
My message to people who are following the science is that Coronavirus is going to be around for years to come, with new variants appearing every few months. Eventually a vaccine resistant variant will probably evolve, and then even those of us who are up-to-date on our vaccinations will become at risk again.
When that happens, it will take time for a new mRNA vaccine to be developed that is effective against the new variant, so we will need to fall back to our early pandemic prevention protocols: masking, social distancing, hand sanitizing, air purification, and lockdowns.
So, we might as well get prepared now for something that is likely to be inevitable. This is a good time to equip your family with P100 half face respirators & filters, as well as the other PPE mentioned in this video. The extra PPE is especially recommended for whoever in your family is likely to be taking care of sick family members in the future.
Now is a good time to get your pandemic emergency kits together so that you won't be looking at empty shelves when the need finally arises.
Thanks Doc for the best mask presentation that I've seen so far.
P.S. I have been expecting global pandemics in the 21st century for some time, so we've had all our PPE supplies on hand for years. We even have his & her hazmat suits. It was obvious that a major downside of a globally connected world is the speed at which new diseases can be spread by international air travel. This particular 21st century problem is utterly predictable, but, fortunately, here in 1st world countries we have the means to maximize our personal protection.
Very much appreciate the kind feedback! Your post has not just intelligence, but more importantly it combines it with judgment and wisdom. You see the big picture, look long-term, and think very practically.
When you consider these possible scenarios of different mutant strains of covid circulating around for years, I 100% agree with you: an investment in PPE is absolutely essential, especially when these are so cheap and readily available currently. When the next new mutated strain comes around, or if a completely new virus comes on scene, it's good to already have the best evidence-based PPE on hand rather than scrambling to get it.
As someone who has done bioinformatics on the covid genome and runs basic numerical simulations on the pandemic, I concur. In about 30% of the simulations covid has an assortment of alleles making it MERs like and also has immune escape. The peak probability centers around 9 months from now. Utterly depressing. In this case you’re right. Vaccines might not be effective at some point, only fallbacks will be PPE, social distancing. Kinda why I started engineering PAPR masks. We have a disaster closing in on us and most people are so covid fatigued they are pretending the pandemic is over. They just assume covid will go away like spanish flu, but covid is taking a track of short sighted evolution. What it does to its host is of no consequence to its evolution so long as it is infectious enough to escape to its next host. It’s got a far better genetic toolbox than influenza. What’s happening now is largely neutral evolution, this thing is trying as many genetic doors as it can with impunity. It’s a matter of time before it finds the right door.
I was just getting into buying reusable PPEs early 2020. I wanted to go into collection and was just in time.
Now I kind of settle down on a set of half face and full face respirators, plus goggles and spare filters. Kitchen gloves work well and last quite some time. Body protection is tough since reusable ones are so damn hot; but I have one anyway. Most other times, I wear long sleeves, pants, and some kind of head coverings. It's so damn hard to convince my wife to wear them.
You are among the first and only people who see the coming vaccine resistant strain and like a few of us who collect PPEs, and instead of arguing "oh they make variant strain flu vaccine every year", take actual protection.
"with new variants appearing every few months. Eventually a vaccine resistant variant will probably evolve,"
Looks like you were right with Omicron popping up.
@@andrew66769 Yea, he was spot on. And with the other commentator doing modeling work suggesting that a mutated strain that had immune escape was inevitable. What's scary to me is that so many people in public have stopped wearing masks b/c they're probably enduring pandemic fatigue, and think that they're okay now since they're vaccinated. Now as we go into the winter season, this is when everyone really needs to be wearing masks b/c Omicron seems to be infecting a lot of vaccinated people, but we still don't have enough data.
My hope is that 3 doses of the mRNA vaccines will still be efficacious at preventing severe disease and hospitalization/death. If not, it's going to be another hard winter with thousands of deaths a day :( . Pfizer and Moderna will hopefully have an Omicron vaccine within a few months, but that will take some time.
Thank you. I have never been able to understand why more people don't use these. I suspect it is simply down to social inhibition and fear of looking different. Sadly this social phobia even applies to healthcare professionals.
Agreed.
Luckily I don't care if I look like a power ranger as long as I'm protecting my family
It looks cool I think. Maybe in crowded pop culture conventions, it could pass off as a cosplay piece
If anyone is having trouble getting the mask described in the video, you should try an auto paint store. Those masks are the ones we use when working with all the chemicals of painting a car. They are really effective
I’m a scientist, scientific researcher and mechatronics engineer. Most of my friends from school are MDs, PAs and RNs. As educated as they are, they still get some small bit wrong. You actually got everything right. I couldn’t come up with a single point to refine. Gives me hope!
Thank you! There are actually some small things with the video that I'd edit if I could. For instance I said that the respirators of made up of plastic and rubber. I don't think they're made of rubber; when I called 3M directly at one point they told me that the 6200 and the 6800 are made up of thermoplastic elastomer, while the 7500 is made of silicone. They just feel like rubber. Otherwise, yea, I did a lot of research before making these videos, and put a lot of links to the original sources (CDC, 3M). Glad people find it useful and appreciate its thoroughness and rigorous effort to be scientifically correct!
@@SephirothXRA I don’t see any major issues with rubber vs some engineered polymer, the masks should come with cleaning instructions, allergy information, etc.
Right now I am working on making a true positive pressure PAPR system for my medical friends. Basically something that’s fire and forget, wear it all day into battle every day, safe even if things get so embattled that it’s not ideally maintained. Almost ready with the prototype.
I think some of the best features is a two way automatic intercom so people can hear you despite your mask, unobstructed view of your face and outside surroundings, internal glove box so you can scratch your face and eyes, impossible to overbreathe.
@@weirdsciencetv4999 Yea PAPRs are great. I just wish the ones 3M made weren't so expensive (usually $700-1000 at minimum). There were a few instances where I wore both a p100 respirator AND a PAPR. It was probably overkill but that's probably single-handedly the best protection you can get. I've also seen some people wear N95s within the PAPR units.
@@SephirothXRA I am trying to make my PAPR where it obviates the need for donning other PPE. Right now this involves dual filters, dual blowers, dual batteries, triply redundant sensors and controllers. Also some one way valves to ensure failure of one system wont leak air into the still-working system.
Trying to get the cost down to below $500 but it’s a super challenging problem. I learned these suckers are expensive for a reason.
Nice to see a good overview of how to use these effective respirators for Covid.
I think a lot of people don't realize that N100 rated filtration (99.97%) is orders of magnitude better than N95 rated filtration, and that the fit of elastomeric masks is consistently much better than the fit of filtering facepiece respirators.
Absolutely. I didn't get a chance to really talk about the N100 masks that 3M makes b/c my video was already kinda long, but they're fairly economical ($10-15 a piece), and great. Here's a sample link:
www.ebay.com/p/1500127986
They also have exhalation valves. They can similarly be easily covered with a surgical mask. They are officially offering you the same level of protection as a p100 respirator. The only downside is that they can also be bent and lose their seal overtime, just like the N95 masks. I've had it happen when one time I was wearing an N100 at an airport and noticed a small gap in air that I could feel going above my nose; this was after many months of use. At that point, you'd rather have an N95 with a perfect seal rather than an N100 with an imperfect seal. They do have mechanisms to tighten the straps a little bit, but to me it's still not sufficient. The N100s are more casual looking, but elastomeric are the way to go for sure.
I’ve been using a 3M 7500 series with P100 filters for over a year. My biggest issue is that it’s hard for others to understand me when I’m speaking. I recently learned that 3M released a new halfmask line early in 2020 with a built-in speech diaphragm: they’re called the SecureClick line. The new design also makes it easier to breath, since both sides of both cartridges are filters (4 large exposed filtering surfaces instead of 2).
Unfortunately, 3M only allows its sale for “industrial” applications (read: not easily available from major retailers), but I found that industrial supplier Grainger was willing to sell it to me for personal use.
Hi, were you able to buy and try it out long? Is it comfortable to use?
Too bad the system is so expensive compared to a standard bayonet mount respirator especially with cartridges that take replaceable prefilter pads. I really wish 3m made a standard bayonet mount respirator with a speaking diaphragm. Speaking diaphragms are basically a standard feature on full blown gas masks so i really don't get why they're so rare on respirators. MSA makes one specifically for healthcare without an exhale valve but I use mine in industry and really need that valve to keep it from filling with condensate.
There is a NIOSH approved exhalation valve filter 3M part #604 for the 3M 6000 series masks. About $10.00 each.
3M part 604 adds an exhalation filter OFFICIALLY to this 6200 series half mask. Check it out.
This video is great. I wish people knew about NIOSH P100 filters and reusable masks. It's late for them to learn, and yet people still don't know. I blame our leadership for not gradually working on an effort to get a reusable P100 mask in the hands of everyone.
Now Im buying 3M Respirator 62100 + 7093 filter because of your video.☺️
Dude thank you so much for this video !!!! It’s picking up here in Texas and the masks they provide don’t give me a good seal. Thank you for answering all my questions !!
I and my family did very well with the GVS Elipse p100
as a part of my hospital's facilities maintenance department, we occasionally work on the isolation unit fans and working on those usually requires us to wear eye and respiratory protection. We are also occasionally required to enter a patient's room to do anything as simple as removing a flow metering valve for medical gasses and swapping it out (a 1 minute fix) to checking the air supply ductwork in the patient room which can take upwards of 30 minutes sometimes depending on the issue. We also work with aerosol chemicals and in hazardous particulate environments like in the interstituals (the floors in between the floors.. usually marked in the elevator or in the stairwell with an i next to the number like 2I or 3I) where we are exposed to whatever the heck they put all over everything to make it fire retardant. I would personally like to have a full face respirator, however my boss doesn't let me bring in my personal one from home (it's CBRN rated) and wants us to use a half face mask when in those demanding environments (also full face anything for whatever reason has the tendency to unsettle some of the patients). I would agree that using a half face respirator is easier for 99 times out of 100... but it's that one time like changing the air filters for the isolation units or going into a particularly hazardous patient room with an airborne risk and droplet risk that makes me desire the full face. I know this is incredibly long winded... but all in all, I believe maintenance personnel that deal both with patients and HVAC units on site should be issued full face respirators.
I have a pool so I once bought a 6300 respirator to use when I add chemicals to the water. When COVID hit I upgraded to the P100 filters (I was previously using gas only ones that block Chlorine for obvious reasons) and I’m glad I did. I’ve always felt safer wearing the respirator vs the mask.
Thanks for the video! I can also say that the half masks are better when you have to talk a lot. If the inside of the N95 masks get too damp through speaking, this also weakens the protective effect at the same time. In the case of the half masks, the valves ensure that the humid exhaled air of the user does not reach the filters. I use the model 7500 with 3M 6035 filter as a teacher and can report on it from my experiences here in Europe. Thanks to your video, I now feel confirmed in my decision to wear a half mask. I wish you all the best and good health! best regards (sorry for my bad english ;-) )
Thank you for the compliments and good wishes :) ! This is true with the half face mask respirators making it slightly easier for people around you to hear your words. It is slightly harder for patients to hear your words with the 6800 series since it does have 2 layers of protection rather than just 1, but it's worth the extra level of protection if you're doing something high risk with someone who has covid. Plus, the full face mask respirator can draw a bit more scrutiny, ESPECIALLY if used outside a hospital setting.
That's also a very valid and good point to make with how the exhalation valve prevents a certain percentage of humidified air from getting into and potentially damaging the filter. A lot of my valved N95 masks (which I always cover with a surgical mask!!) still have some breath residue on the inside of them, but they've been better preserved than my un-valved N95 masks, which absorb most of the humidified air I exhale. These masks are built to withstand a large amount of moisture, but at some point the filter may be undermined after repeated usage, but you won't be able to tell that so easily. The elastomeric respirators are definitely the way to go :)
I have been saying this for over a year. I barely made it back to Canada from Peru before the lockdown last year; and the first thing I did was pull out both my 3M full face and half mask respirators.
I’m just the common citizen walking around wearing my 7502 and 2097 filters. I don’t cover my exhalation valve as I don’t get close enough to people to intubate them.
Thanks very much for the confirmation.
Look into UVC ventilation systems and FarUVC lighting. It will help reduce transmission.
Great video. 3M 'Quick Latch' solved my exhaust valve problem. I trim the edges of a medical procedure mask and cut it in half crosswise. Lift up the quick latch and place the half piece over the exhaust valve and close the latch. On my other half face 3M respirators I used to put a medical procedure mask vertically instead of horizontally over the valve. The ear loops go over and under the back of the mask. I find the 3M 2296 and 2297 grey pancake filters are slightly better. I'm in Canada and had to buy 'Made in Canada' 7093 filters in the USA. I started wearing a N100 2nd week of January 2020 and upgraded as time went on. I've been wearing respirator masks for 35+ years, always 3M.
The Quick release sounds like the 6500QL 1/2 mask. I got one and do the same
3M now offers filters for the exhalation port on the front of the 6000 series respirator.
Perhaps you should also consider MSA Advantage 290. It is the first P100 elastomeric respirator that does NOT have an exhaust valve at all. This seems superior to me because if you just use surgical mask to cover the exhaust valve, some of the air the wearer breathes out still escapes. I know in theory, it is the same as someone wearing a surgical mask, but I have doubts that a surgical mask wrapped around an exhaust valve of a mask works as well as one on a person's face for blocking aerosols (they are designed for faces, not mask exhaust valves after all). And sticky taping surgical mask material over the entire mask exhaust valve wouldn't work either, as the increased pressure inside the mask when the wearer exhales may cause the seal to slightly break (so that the mask no longer functions as P100).
Or you could use a 604 exhale valve filter and both stay in the much more ubiquitous 3m ecosystem and not force your inhale filters to pull double duty... Just saying.
Thank you for a very thorough coverage of these masks. I am surprised more people are not using them. I plan to use one for the fire smoke we are now experiencing in Alberta Canada.
Most people are just not aware of elastomeric respirators in general. Even early in the pandemic, the craze was all about N95s, and they were near impossible to find. If people knew about p100s, they would have been in shorter supply. You either do your own research, or hear from a friend/colleague, etc.
I wish more people in general would be okay using N95s though. I see a lot of people using KN95s, which can be great if they're not counterfeit. Cloth masks and surgical masks work great when everyone uses them. When you have a virus with an Ro (R-naught) of 6-8, a surgical mask just isn't going to offer you the same protection as an N95. Most people in public will look at a p100 and laugh =P
N95s, p100s, p99s, N100s; pretty much any of these are great in general.
p100s are probably better for wildfire smoke. Frankly, even if one is going underneath one's house, doing a lot of household work with exposure to dust, even an N95 is fine..
If I was working in a covid ward I'd definitely want the P100.
Great piece of info bro. Found it very useful. You explained most of my queries which were not easy to come by .
Glad you liked it! Yea, I tried to be meticulous and thorough with a lot of the logistics that are hard to find answers to. I accumulated a lot of this knowledge over many months of literature review, reading various resources on Reddit, CDC and HHS fact sheets, and then amalgamate it into one, useful video :)
@@SephirothXRA We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Having emphysema i've been using 3m 7500 half Face Respirator with 3M P100 Respirator Cartridge/Filter 60923 as my Doctor recommended, i thought this was overkill but now i know better. now that delta is here this is even more important.
Bro - wish you’d made this last year so I could have sent your vid to all my fool friends laughing at me for me P-100 (literally the one you use, minus the goggles). I had mine from before the pandemic (for painting, welding, grinding). Got a couple more for my wife and family. Sure turns heads in the grocery store. People never believe how easy they are to source and to wear
Thank you for the compliments! Yea, wish I had gotten around to making this last year, as well. I had circulated some hand written guides on these respirators in my local medical community, but wanted to eventually make this video once I had more time so that people globally could watch and learn about these respirators. I do feel that awareness of these masks is genuinely important and I wish more people out there could learn about them
I found that making youtube videos is not as easy as it seems. This video was originally ~29 mins, and I cut out almost half of it. 16 minutes still feels too long, but I really tried including genuinely important information, and avoid rambling too much.
Careful where you wear them. Airlines explicitly ban respirators/masks with exhalation valves. Their policy is a bit myopic b/c even if you cover the valve, if they find out that your mask has a valve (even if it's covered), they will not let you get on the plane. It's as silly as saying you can't come on a plane with a surgical mask b/c you still have exhalation valves for your body (a nose and a mouth), even if you're covering your nose/mouth with a mask.
I've seen some people put extremely large neck coverings (or like large balaclavas) around their respirator. You'll look a bit funky having a giant cloth covering around your face as the respirator will make the cloth covering really protrude from your face, but people won't see the respirator. They may still stare a little bit, but not as much as wearing a regular elastomeric respirator. So if you ever need to fly and don't want airlines seeing the respirator, consider covering the respirator with this balaclava; you're then knocking two birds with one stone by both covering the valve as well as preventing people from seeing what's really underneath.
www.amazon.com/gp/product/B08GPBDNSY/ref=ox_sc_act_title_1?smid=A1DW97D2ANEORR&psc=1
Good on you bro.
I wear mine to shop too and have been just short of being verbally harrassed. I especially wear these into hospitals, clinics, urgent care, etc. with evil stares and mockery. But time will show how effective these masks are.
Thumbs up. 1. Very indepth , spoke slowly 2. Showed the two masks 3. Explained fitting and particle asobtions 4. *** told me there's small sizes for me 5. Not to many powerpoint slides going high speed 6. Informed that lysol wipes degrade integrity of N95 but nor the p100. Thx
Australia numbers are really impacting our health system, ive been wearing n95 1860 but have just ordered 3m 6200 and 7093 filters
I was walking around with a 3m half respirator and the pink p100 pancake filters. They were super cheap at my local paint shop when all the n95 were over priced or sold out.
Good work mate...
Something to add concerning the difference between the 6200 half-mask vs the 6700/6800/6900 full mask is that the full face masks have both inner and outer face seals, so you get a safer seal to the face, and that is a factor that wasn't mentioned when discussing how the 6800 offers eye protection.
The inner seal doesn't seal against ingress of external air. It's only there to reduce dead space so you don't rebreathe exhaled CO2.
I use 7502 respirator with 7093 P100 filter. Might get the 7093C next time as it neutralizes odor. I put a hair cap or a shoe cover over my respirator during attending to my bedside patients so it covers the exhaust as well
Thank you so much for the video.I am using 3M 2091 respirators for seeing Covid19 patients.I am from Nepal.I feel so protected after watching your video.
Glad you like them! Definitely great protection
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Perfect 🍀🔥✌️😜 thx
Thanks. I have been using a 3M haft mask with the P100 round filter for a month now. It’s quite confortable.
Glad you like it! They are comfortable indeed, as long as it's not too tight (but also not too loose where the seal is compromised!).
I have been using the 3m half face respirator with 7093 catridge....first 2 days it was fine but I later I started observing a click or a slight pressure hold for 1 second before the air is exhaled...the seal is not compromised but a pressure developing and the release is giving a click type feel..anyone has observed this?
Also the higher end full flace reaperators can accept positive air.
Bless me father.
@15:20 you can also find them at most hardware stores like Lowes, Home Depot, or Ace
True. When the pandemic first started it was near impossible to find them in stores. Now they're widely available.
@@SephirothXRA very true. Thanks for the video! It was helpful for a situation I'm in now...wanted to know if the one's I had were good for this purpose.
Another respirator to check out. The 3M 6500QL, this model has a quick release system built into the mask, the lever on the QL is good for securing a folded N95 over the down facing rebreather
Realy helpful, thank you
Great video thanks for sharing
Thanks so much for demonstrating this on these masks. I myself have been wearing the P 100by 3m since 2020 covid 19 pandemic started. Yes it is comfortable, easy to breathe. You can wear it up to 3 to 8 hours. Change the filter every 4 to 6 months. It's unfortunate that these masks are not advertised or talked about. I assure you , you will feel more confident wearing one. To also find them Uline a Canadian company. Check online. You will be happy that you did purchased, it is worth it.
Good luck all!!
Thank you for this lovely informative video !
(from a fellow doctor)
Excellent Video Dr. I recently got a Respirator Half Face Cover which came with a pair of 2091 P100 filters. I upgraded to the more robust 3M P100/60926. WIth all the wildfires out Southwest USA, I think the 60926 will improve air quality overall. I upgraded from N95 with the Value to P100. I don't work in medical field so I went to P100 to not hoard the N95 supply needed by medical professionals. Thanks for this video. Some people wear these flimsy cloth masks over their chin. That's dangerous.
Get the grey p100 filters. They make breathing way easier
Thank you for the information Dr. We are going to be in the o.r for our 4th yr bsn program. I bought the p100 mask. I can't wait so exciting 🤗
I kinda wish that 3m would develop adapters for the TR-600/300 papr so as to accept bayonet style filters as well as 40mm threaded filters, also I kinda found that the TR-600/300 papr use proprietary batteries and one would hope that they create power adapters to accept dewalt power tool batteries as well as standard off the shelf batteries, Kinda off topic, but your video was very detailed and it helped me determine what equipment to buy as an insurance policy in the event of another pandemic surge, I hope you make more videos such as these! I appreciate your insight and your dedication to the medical community! Salute!
thanks for dis video... really informative...and lots of doubts cleared...thank u very much sir.
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Thanks for this info!
GVS offers a mask without exhalation valves, unfortunately not in Europe ("Elipse P100 with Source Control NIOSH Respirator").
I am using a Sundström with P3/P100 mask since the beginning of the pandemic and it actually protected me from infection - I had contact to infected people several times. No N95-mask was able to fit to my face.
That's good that there are now ones without valves, incase someone wants it like that. Personally I find it better with the valve as even if I cover the valve with a surgical mask, the resistance to exhalation is far lower than compared to if I have to exhale through a p100 filter. Not to mention, the moisture from your breath can affect the p100 filter overtime if your exhaled air goes through it thousands of times.
Great video and overview, Doc!
I had one concern and it's where you stated that these filters can last over a year after initial use. 3M states "Once opened, maximum use time is 6 months (even if not used). The carbon will absorb contaminants from the general environment." I tried both of the 3M half masks but prefer the JSP Force Typhoon 8 for just P100 protection.
Thanks!
Hey Mitch, thanks for the feedback. Yea, once it's opened, probably best to try and keep them in zip-loc bags, or something where they're not exposed to air flow. Even if not in active use, air particles are still constantly going through the filter media. I would be genuinely curious how the filtration of p100 filters change over the course of being left outside over months/years.
One time when I actually called 3M to ask a bunch of questions, I asked them about this subject (i.e., even if expiration date is 5 years, are we not supposed to replace them 6-12 months after opening them). They reassured me and still stuck with the whole "use them until they're subjectively harder to breathe" advice.
After watching some other videos, it appears that this is more important for ones with an activated carbon filter that protect against gases and vapors where exposure to air over time will damage the activated carbon filter. If it's just for particulates, even if it's left outside for a while, it won't affect the filter that much. So basically: for particulate filters, use them until they're harder to breathe. For gas/vapor filters, you basically use them until you start smelling the actual gas/vapor, which then tells you that the activated carbon filter is not working as well as it used to. For people wanting protection from covid, you really only need the particular filter.
3M had originally written how these filters were meant to last a "pandemic," which was kind of vague admittingly. I'm under the impression that even if one used a 3M filter 1-2 years after it was first opened, it'd probably still get you pretty decent protection, but ultimately best to go with what the manufacturer recommends. Some studies I've read showed that N95s (which are supposed to do 95% filtration) will sometimes only do about 90% filtration after many months of use. So I'm inclined to believe that using a p100 filter will be fine after months of use b/c of how much more exponentially protective it is than N95s.
Thankfully, these filters are quite economical, and more healthcare providers are getting vaccinated.
@@SephirothXRA I too am curious on how a P100 filter will last, sitting outside for months, and not being used. I honestly don't even think 3M knows, which is probably why most of their product longevity answers are always so vague. I guess like all brands, there's really no definitely answer; just "replace it when it's hard to breathe." I fully support the use of half-mask for COVID protection, it's a huge cost-savings over disposable N95 masks. Yes, the user will have some inconvenience to maintain and clean the mask but still, better protection and lower spending is hard to beat.
@Glen Mayne he might meant the 7093C P100 filter. It's 7093 with carbon filter.
theres a few things you mis understood about the n100 (P3) and the n95 (P2) is that the 95% filtration is a grade it means for stuff that is thermally generated they can't pass through (Not exactly what covid is but it'll stop dust from entering the lungs. n100 (P3) is a alot overkill version of the n95 however you can only get that level of protection with a full face respirator otherwise you get n95 (P2). n100 is designed for Highly toxic particles (Asbestos, Beryllium and silica Dust) Not saying you can't use a n100 mask for covid just a bit overkill and you don't need that level of protection.
Yea, N95s are not wrong to ever use with covid 19 patients. The seal of the elastomeric respirators is just so much better than what a single N95 can provide b/c silicone and thermoplastic elastomer are not as degradeable and subject to damage as the material that the N95 masks use. All N95s are NIOSH certified and pass stringent tests, but ultimately I still subjectively feel that some of the masks have less stronger seals than others.
One could also use N95 filters attached to the elastomerics and it would be fine. But if one is already using an elastomeric, one should rather just go for the filter that filters 99.97% of particles at the level of 0.3 microns compared to at least 95%, if it's your life on the line. Some N95s will actually filter 99% of particles in real life tests, but there can be variability, including with imperfect seals. Lastly, and as far as I know, there is not an acute shortage of p100 filters out there, so this is why I feel that wide adoption of p100s would still be fine.
P100s are essentially the same things as a HEPA filter.
Really helpful, just got it from Amazon! new sub! and thanks for what you do (from a massage therapist/x-ray tech soon to be)
Is it safe to disinfect those respirators and filters using uvc light with ozone?
UV is not the ideal surface disinfection agent because light travels in straight lines and does not go into shadows and crevices - it does not penetrate mask materials or cloth at all. PPE is another matter. There are UV boxes with UV in them for this purpose, but again, UV not ideal for masks due to spaces it cannot reach (e.g., inside the actual p100 respirators themselves). They will be expensive - intended for hospitals.
Either 254 or 222 nm works, for air and surfaces, but 222 is expensive and not really available. It can be used in occupied rooms. 254 nm is used in the upper room for air disinfection. Nothing you buy on Amazon will be useful - wands are low power - harmless but not helpful. I have not seen any method for home use, but it should be possible.
In short, it's better to use disinfectant wipes or clean them according to 3M's website:
multimedia.3m.com/mws/media/473937O/3mtm-cleaning-reusable-respirators.pdf
Great info! Thanks
Thank you for the compliments! There are lots of videos out there on elastomeric respirators, but I've found that few explain them in larger context (i.e., delineating exactly what p100 means in comparison to N95s, and talking about the different model numbers as it relates to healthcare workers). I'm going to write a more encyclopedic web article on these soon, too, which I will put in the description.
That you so much. May my good lord continue to bless you and protect you and your family.
I have a full face 3M from working with epoxy
I'm going to buy a half face, size Large fits perfect, so I'm going to buy the same
Thanks for the video
As you say, I think it's good for people to keep in mind that 3M has been doing this forever and their filters are widely available
Yea, there's a lot of people out there who've been using these masks for years who are grateful to already have the equipment and know about them. They are also useful for numerous other things as well, not just covid-19 prevention (you can use them if there's a dust-storm or wild fire smoke, or if you're going under your house/apartment and are concerned about pathogens/carcinogens in the air, and there's even filters useful for painting). I think it's always good to have these respirators incase something even worse than covid-19 comes around, too.
What's best for car exhaust and city smog/pollution?
I would consider filters that are rated for vapors. For instance, the difference between the 2091 and 2097 filters (both of which are p100 rated filers) is that the 2097 filter vapors. I noticed that with the 2097s, I didn't smell much car exhaust in areas with a lot of cars, but as soon as I removed them, I could smell car exhaust. There might be larger filters which are better (like 60921s), but they would be far more bulkier. There's a lot I don't know about this, so take this with a grain of salt, as I'm speaking from personal experience.
Thanks Doc, this video is great! I learned a ton.
Thank you!!
Just one question. Why doesn’t 3M manufacture half face respirators minus the valve? The whole setup looks really messy with surgical mask on top of half respirator mask 😅
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
I myself wear a full face mask with a 3M P100 Respirator Filter on it when I go out. I got mine on eBay Friday, Dec. 24, 2021
Thank you, found this to be very helpful and thorough.
Extremely helpful, thank you!!
Really good video. I have a half face mask size large but its so uncomfortable. It has to be so tight when I do the exhale test to ensure no air seeps out that part of the mask on my nose or straps around my ears dig into my skin. Any tips on that? Am I tightening it too much?
Get a medium and see how that treats you :)
Great masks. They absolutely seal to your face and allow way more airflow than typical N95 mask. Example: Typical N95 worn with glasses and faceshield fog up both to the point where you can’t see too well in front of you or breathe too well. Half face respirators worn with goggles face shield under exertion, no fogged up view and still able to breathe.
this video should be watched by everyone
When this madness first began in 2020 nobody knew what was going on I was wearing a p100 in public because I was concerned about a real pandemic......I don't wear a mask anymore for covid worries... I still wear either n95 or p100 at work for asbestos and fiberglass.
Thanks Dr. I have the half mask like the one in this video
No point to try and "cover" the exhalation valve with a surgical mask. That's improper usage of said surgical mask and you can clearly see the huge gaps all around it.
Fair thoughts, but couple of things from my end.
The only reason to cover the valve is to prevent you from giving covid to those around you, incase you were unknowingly infectious and asymptomatic. If the patient already has covid, this concern is not as relevant. There is maybe some theoretical concern if you happened to have a different variant than the patient, that you could possibly worsen their infection if they get two different variants, though I've yet to see any evidence on this, and it's more theoretical.
So in some regard, a hospital infection prevention/control division could say even if the surgical mask does not have a super tight fit on the valve, that it's not a large concern. And some could even say you don't need to cover the valve with covid patients. As long as you've wrapped the mask around the filters and it's generally covering the valve, it's fine since you're pretty much only using it for the covid patient and then taking off the respirator once you've exited the room. Anyone wearing any stand alone surgical mask on their face will always have some gaps around their face anyways. Furthermore, if you look at page 13 on this document
www.dir.ca.gov/dosh/coronavirus/Elastomeric-Respirators-Healthcare-Workers-Brosseau.pdf
You see how when people wear a surgical mask, air leaks from surgical masks go in all directions, including behind the head. With exhalation valves, they're only going in one direction, and if you cover the valve, and even if the gap being covered with a surgical mask is slightly larger, it's not a big deal. Especially if the person wearing the respirator is already vaccinated against covid.
So in short, covering the valve relatively well is always going to be better than not covering it at all, but covering the valve probably isn't even necessary with covid patients.
With my gear that I personally use, I also have a large face shield covering my entire respirator+surgical mask, so the shield is also blocking a lot of exhaled air.
But if one is so genuinely concerned about this, there are other standardized strategies to make the surgical mask's seal around the valve tighter, which I didn't talk about in my video. One can simply use some tape to fasten the surgical mask around the valve. It's one extra step compared to just putting on a regular old N95 mask, but for me it's a very simple adjustment that is completely worth it b/c of getting 99.97% protection rather than 95%.
But yes, if someone intends on using elastomeric respirators outside of a healthcare setting (like on an airplane, or in a grocery store), they can be a little more prudent on ensuring the surgical mask covers the valve a little bit better, and can use some tape if need be.
At the end of the day, covering the valve with surgical mask like in my video is far better than not covering the valve at all.
I've seen a lot of people fall into the flawed mindset of "I don't need to cover the valve b/c I'm unlikely to have covid," which is just as bad as the person who says "I don't need to wear a mask b/c I don't have covid." If everyone thinks that, then all of society is worse off, and it inevitably leads to more infections. It's like the flawed mindset of people who decide not to vote in elections b/c they decide that one vote won't make a difference, when in reality everyone's votes collectively make a difference.
had a question for you I am trying to work on some home made gas mask thing as I know its a home made product I understand I cant sue if it fails with that that out of the way I ve got a couple of questions for you may be you can answer? it would seem theoretically if there were a way to jerry rig an N-95 which seems to be the current recommendation for the current poor air quaility issue would you think assuming there were a way to do it addtional benefit would be provided if there were a way to keep the filter on the mask as close to the ground as possible? thoughts please thank you!
Now this may seem a little gross and it might grow some people out but if you take a little bit of Vaseline and put it around the face nozzle seal of the p100 respirator it will act as a gasket. Basically you're making grease seal between the mask and your face. The only problem is that it doesn't last forever probably good 30 minutes
What are the advantages of this method? Does it make the seal better? Or does it just make it more comfortable?
Nice info on respirators. Not for lay people or community use. Because most of them have inhalation filters, and no exhalation filters. Meaning the wearer is protected from the surrounding, but other people outside are not protected from the breath/sneeze of the wearer. This is why CDC discourages masks with exhalation valves for public use.
Did you watch the full video? If you look at 6:26 in the video, I talk about how you can cover the exhalation valve with a surgical mask, either by wrapping it around the filters, or using tape if you want.
Also, if you're seeing a covid 19 patient, the patient already has covid, so you really don't need to cover the valve anyways, b/c even if you're infected with covid-19 without realizing, you can't give it to them through your own exhaled droplets since they already have it. Obviously if you're seeing a covid-negative patient, or if you're out in public or on an airplane, then you need to cover the valve.
CDC hasn't formally banned masks with exhalation valves. They don't recommend them to the general public. But if you do research, you'll find plenty of resources where CDC and HHS discuss the use of elastomeric respirators in emergency healthcare settings. There are plenty of roles for their use with covid-19 patients, which is the focus of this video. I don't discuss the use of respirators for use in the public, though you certainly can if you cover the valve. More here:
files.asprtracie.hhs.gov/documents/elastomeric-half-mask-respirators-and-powered-air-purifying-respirators-in-healthcare-and-ems-settings-fact-sheet.pdf
www.cdc.gov/coronavirus/2019-ncov/hcp/elastomeric-respirators-strategy/index.html
@@SephirothXRA I agree. For doctors seeing Covid positive patient or those HCWs working in Covid positive wards, the primary goal is to protect the health care workers. So respirators can't theoretically introduce extra harm, assuming the opposite person is already a patient.
Default design of a respirator is biased towards one way protection. For healthcare settings however we need 2 way protection. And as you said, one could use a piece of mask or even better - to use a exhalation filter, which by the way is not that common to find due to the design bias.
The link you shared also makes a mention of this:
"...Elastomeric respirators with exhalation valves should not be used in surgical settings due to concerns that unfiltered air coming out of the exhalation valve may contaminate the surgical field."
www.cdc.gov/coronavirus/2019-ncov/hcp/elastomeric-respirators-strategy/index.html
EDIT: Edited my earlier comment based on your input. Thanks for your comments.👍
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
I agree!
Yep, I rely on my M40a1 and Avon m50 gas masks. The latter I wear for longer periods of time and the M40a1 for shorter runs
Gas masks can work, too, in addition to p100 masks. If you don't mind me asking, how much did you pay for your gas masks, and how long do they last for before you replace the gas canisters/filters?
@@SephirothXRA got them both under $200 from private sales. I use CBRN filters (M61 filters for the M50 and 3M FR15 for the M40a1). I switched 3m FR15 filters every two months but they can go longer. Just got my M50 recently and plan on replacing my first pair of filters according to the life indicator (they turn blue to show that the filters need to be replaced based on humidity)
When not in use, I usually seal the filters in bags so they don’t clog with dust when on standby
I would love to wear a P100 style mask if it wouldn't get me weird looks for being overboard paranoid... wearing a KN94 or N95 is already the norm here, but anything that looks like you are about to start a fight as a Batman villain... still a bit out there
I have never cared about what other people think of me. Most people don't really know squat about much of anything, especially this virus. Their uninformed opinions are irrelevant.
I did my online research on SARS-CoV-2 and the medical science says "if you're serious about keeping this virus out of your lungs then get the tightest fitting mask with the best filtration that you can afford & comfortably wear for long periods of time in high risk social situations.
For me that was a 3M half face respirator with P100 filters.
I wear it everywhere, including at the supermarket, and since I mind my own business I don't even notice if anyone stares or makes any comments.
NOTE: when some future variant has immune escape mutations, our existing vaccine immunity will not protect us. We will be back to square one. The people who survive that variant until a new mRNA vaccine becomes available will be those who mask up effectively & follow CDC respiratory virus safety protocols.
The science is not all that difficult to understand and the research is all online & free. Protect your health & your life. Ignore the stares of the ignorant.
great bit of information, however with the new variants it would be good to see an update of how really efective these respirators have been towards keeping the people wearing them safe , the reason i am asking is because 3M does not stand behind their product when it comes to viruses etc.
Very helpful information. Thanks for sharing.
Can please specify how many days can we use 3m cartridge filters?
When to replace them?
The expiration date is 5 years from when they're made.
The point at which you need to replace them depends, but usually happens when it gets subjectively harder to breathe. This will happen the more you use it. If you use it 8 hours a day everyday, for instance, you will need to replace it much sooner than if you use it 2-3 hours a day a few days a week. The more particles that get stuck in the filter, the harder it will be to breathe (but also the better it will protect against virus particles).
I've seen people using it for 6 hours a day, 5 days a week have their filters last anywhere from 3-6 months. It really depends. 3M writes on their website that a filter pair will "last a pandemic," which is kind of vague but basically means they will last you many months.
I wear these because I am high risk (immune compromised) and live in a congregate facility
How do you know when to cover your eyes? It sounds like in any situation where you’d want a respirator, you’d also want to cover your eyes.
Thanks, Dr. Ahuja. This was very helpful. What do you think of 3m Respirator 8293 for protection against Covid?
Its protection against covid is great. Its filtration efficiency is 99.97%. They're better than the n95s that healthcare providers use for covid patients.
These are like standard n95s in that they're technically disposable masks. The more you use them, the more the seal can be compromisd over time. This isn't to say you can't use them. But you'd eventually use a fresh mask after some time.
@@SephirothXRA Thank you so much. Your quick reply is truly appreciated.
thank you for your video my current question is for a private citzen do you think a pancake filter p-100 is possible for mall shopping or groceries?
Dr. my sister just finished her nursing degree and she is joining a Covid 19 ward in a Florida hospital and would like to inquire about the efficiency of P100 filters overtime and in ventilator settings! Provided she can maintain a good fit, how much she is really protected from the virus aerosols and larger droplets and for how long of continuous exposure in a Covid unit!
It's effective indefinitely until you can no longer breathe through the filter easily meaning it takes too much effort.
Can you wipe them with alcohol instead of Lysol wipes?
Also, you should cover the exhalation valve because you don't want to give an already sick patient the cold or the flu in addition to their COVID infection.
I see your point. One of the good things with colds and flus is that they have very short incubation period, and they are spread by droplet, not aerosols. You usually only spread the virus when you have symptoms, which doesn't make the need for wearing a mask as significant. If a healthcare provider doesn't have symptoms, it's highly unlikely they're spreading a flu or cold virus. The problem with covid is that you can have no symptoms for 4-7 days yet still be spreading the virus, so that's why it's important to always wear a mask.
I've cared for patients with bacterial pneumonia in the hospital, and even if the same risk applies (that you give them the cold or flu, and they would theoretically do worse), we healthcare providers still didn't routinely wear masks around them to prevent them from getting cold or flu b/c it's just not that common to be asymptomatic and contagious with one of those viruses.
Some of the other instances before the pandemic where we wear masks around patients even if they don't have an infection is if patients are neutropenic, or have very low white blood cell counts and very weak immune systems, where you might accidentally breathe bacteria into their mouth, and then those bacteria cause them significant complications. So healthcare providers would wear a mask at all times around those patients.
Regardless, I still cover the valve anyways, and am not saying that we should stop covering it. But mostly that the risk of transmitting other viruses like the flu is low. One would be more concerned if someone had alpha coronavirus, and then a healthcare provider who is asymptomatic gives the alpha covid patient the delta variant.
@@SephirothXRA Man, I honestly have no medical experience. I just noticed that we act as if no other diseases exist other than COVID. But I appreciate your explanation as I learned a lot.
In addition, i have moved on to 3M respirators from KN95's for general use in public. Here in Idaho, we have a low vaccination rate, yet it appears as if we have 100% vaccination rate if you go into a store or a gym.
To me, a respirator basically gives the middle finger to everyone as it 100% protects me, but it doesn't protect anyone else -- because well... Nobody wears a mask for me. My only concern is that respirators may be made illegal once that comes to light. As it's the inverse of a surgical mask.
@@telengardforever7783 Yea, I feel like if no one is wearing a mask, they shouldn't be criticizing you for having a mask with an exhalation valve.
Whenever I wear one of my elastomeric respirators out in public, I use this neck balaclava from amazon to cover it. It's nice b/c people won't see the respirator at all since the balaclava is so large. They will still see some prominence protruding from your face, but it certainly won't draw as much public scrutiny as wearing the respirator by itself since they do look so unusual outside hospital settings
www.amazon.com/gp/product/B08GPBDNSY/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
One time I boarded an aircraft and was covering the valve with a surgical mask, and the flight attendant actually told me that even if I was covering the valve, I'm not allowed to wear it b/c of the fact that it has a valve. To me, that policy is absolutely silly, and has extremely flat logic.
If a human is covering their nose and mouth with a surgical mask, no one tells them they can't enter b/c they still have an exhalation valve (nose and mouth), evven if it is being covered.
I didn't fight it at that time, but it was an extremely useful experience, b/c now I know to just put the balaclava around the respirator, and they won't know what's underneath.
The reasoning should be: if you can't see the valve (whether it's someone nose, mouth, or mask's exhaust port), it's not a problem at all. As long as you're covering the valve with something, it's fine. There should be exceptions (if you're covering the valve with a mask), rather than just a blanket policy that does not consider reasonable counter-points.
@@SephirothXRA That is an excellent solution. It would have never occurred to me to use a balaclava to hide the respirator. I realize I will have to convert the respirator to a N100 by removing the one-way flappers and duct taping the exhaust, but without the balaclava, I know I would still be forced to remove the converted respirator. With your idea, I would basically have the most powerful facemask possible on a flight -- or in any other situation in which a respirator is illegal.
I thought masks are supposed to protect “others” from your exhaled air. These respirators don’t filter the exhaled air but only the inhaled air. These masks actually exhaust air either directly to the front or down. Wouldn’t that blow your air directly into your patient’s face?
There is a NIOSH approved exhalation valve filter for 3M 6000 series masks.
I am going to the links in the description but none of them mention in the sales adds they are for defending against Covid 19? I need something for work and I am done with those stupid exam masks.
Anything that is rated N95 or p100 by NIOSH is appropriate for covid-19. It doesn't have to specifically say in the mask description that it's okay for covid. Anything that is rated n95 or p100 is filtering at the level of 0.3 microns with electrostatic fibers.
Congrats! But one question remained slightly unclear to me. Does the electrostatic properties of 3m et al filters add an extra protection to their already p100 grade or just helps it to reach such a grade with easier breath? The latter was what I could understand trough my searches. So happy to watch this video, you can't imagine. I came to the same conclusions and choices right in the beginning of the pandemic, through thorough on line research, starting from zero! Though a retired MD I supplied this solution to my own family and my own 'civilian' use, and couldn't understand why it's not been advised to our front line colleagues, specially in the masks shortage period.
Very informative 👍👍
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
Hello Rahul
How are (Gas Cartridge Particulate 7093), (Multi Gas/Vapor Cartridge 60926) and (Organic Vapor Cartridge 60921) P100 Filters are different?
Which should we use for better protection against covid?
Thanks for this, very informative, video. Regarding the half face mask, which proves the more comfortable: rubber or silicon?
Silicone by far.
Technically the 6200 is thermoplastic elastomer while the 7500 is silicone. In the video I said rubber b/c that's kind of what it feels like; this was before I actually knew what they were physically made of.
@@SephirothXRA Thanks, so very much, Dr. R; I'll get one, tomorrow. With Omicron hitting Toronto, I'm taking no chances. Best!
All employees are required to be fit tested to prove they have the lung capacity as well as the correct fit. You are recommending equipment used for fumes, dust and gasses, while recommending people intentionally block the exhaust. You should consult Fed OSHA before recommending medical advice on this one. Here is a question, have you been professionally fit tested and trained in wearing a P100 respirator?
Sir, is the round P100 good too once they are wet with sweat? I use UV to sanitize those though. Planning to change to the plastic one if stocks are available in my area! Thank you for the nice video. Keep safe. ❤️🙏🏻
For use in Dentistry, I feel 3M 6800 is a better option cause of aerosols. 3M 6200 feels better to use but I am not able to find a Aerosol proof Gas tight Googles
What about swimming goggles?
Honestly I feel like the seal on the goggles is not as crucial as the mask. As long as it's covering most of the eyes and is sealed relatively well, should probably be fine.
I have been trying Swimming Goggles. Excellent seal but uncomfortable for long duration use cause of its vacuum effect. I have also faced fogging issues in them. So have decided to use the 3M 6800 full face Respirator from now on for Aerosol Generating Procedures
Just adding the simple fact that P100 is rated to .3 micron and covid molecule is .14 micron. Just sayin.. The question I always ask is WHY do doctors never seem to mention this simple fact? ?? Have worn full face masks for work for decades and have been had to take OSHA classes on masks. Not going to say what I would like to tell you about the ability of masks to filter covid.
This video addresses the concern you raised. Small particles still get caught up in p100 masks bc of brownian motion, even if its smaller than the official rated filtration. In a 16 min video I do not have time to go over the physics of these masks, though I have had this video linked in my video description since it was published.
ruclips.net/video/eAdanPfQdCA/видео.htmlsi=038sPh0jCIXZ3L4h
Furthermore, covid does not stay isolated as a viral particle. It is usually bound to particles larger than it (respiratory droplets, aerosols, proteins), and it is those larger particles that usually get caught up.
I'm using the FFP2 Barbeador Max-02. I'm working as a taxi driver.
Do you recommend them?
Corona virus size .125 microns, p100 filters as low .3 microns
Virus' does not travel naked in air, it is carried in aerosols or droplets. HEPA/P100 filters 99.97% at 0.3 µm, which is deemed the most difficult particle size to filter
Hi have you tried the 6035 (white cartridge)? Do you know if those were the best for hospital setting? I’ve heard that it is the “medical grade” cartridge.
Seems the 6035 are pretty similar to the 7093 filter. As long as it's rated p100 by NIOSH, it should be fine for a hospital setting with covid patients.
Good day Doctor! I am also a doctor. How could a 3M filter (which can only filters 0.3 microns and bigger) protects you from the SARS COV-2? Knowing that the virus is 0.1micron in size. I think N95 mask is still the best protection to wear because it can filters 0.3 microns or less. Stay safe!
The p100 and n95 filters use very similar material; both are officially rated to block particles greater than 0.3 microns by NIOSH. The difference is that the p100s tend to have much more thicker and dense filter amounts than n95s, which is why they block 99.97% rather than 95%.
The SARS-CoV2 virus is is indeed smaller than the N95/P100 filter size, but the virus always travels attached to larger particles and respiratory droplets that are consistently caught by the filter. There is never a naked virus floating in the air or released by people. Most respiratory droplets from humans are greater than 1 micron.
However, BOTH filters have a couple of mechanisms to block particles smaller than 0.3 microns, which I talk about below.
Even if the particles are smaller than the N95/P100 filter size, the erratic motion of particles that small (which is called Brownian motion) and the electrostatic attraction generated by the mask means they would be consistently caught as well. These two principles are demonstrated in the video below. Both N95s and P100s use these mechanisms, so there's no basis for N95s blocking particles smaller than 0.3 microns but P100s not since both use the same filter material and the p100 has more of that material.
ruclips.net/video/eAdanPfQdCA/видео.html
These principles are also discussed in the USAToday article I link below which cites academics and experts in these fields:
www.usatoday.com/story/news/factcheck/2020/06/11/fact-check-n-95-filters-not-too-large-stop-covid-19-particles/5343537002/
Great video! I'm getting some FFP3 masks, do you have any recommendations as to eye protection while using FFP3 masks? I know Covid droplets can also enter through your eyes.
I use Dewalt Safety Goggles (link is at the bottom of my video description). I then recommend putting a face shield on top of both the eye protection and the filter, ideally one that even covers the filter (the link to the face shield I use in the video is also linked at the bottom of the video description)
Great video!
Reiterated my belief that ,respirators do offer the best protection
I've used both the half face and full face respirator (I am a dentist)
Personally the full face one makes me feel more secure
Only complaint,talking is a BIG issue!
Any tips?
lean to use your hands when useful for added emphasis. Writing on Pad Paper like underwater will also help a lot plus texting on the phone will also be helpful just texting and showing the text to the other person is one trick I use ... you don't need to send the message anywhere... just typing it is what you need to do
Half face mask will be best for talking and people hearing you. Full face masks will make it the hardest for people to hear you.
You can consider covering a half face mask and eye goggles with a faceshield as I describe later in the video (linked below too). That might make it slightly easier for ppl to hear you, but I'm honestly not too sure. I've actually yet to use the full face mask with covid patients, even though I have it and it cost me $120.
ruclips.net/user/redirect?event=video_description&redir_token=QUFFLUhqbTF4Q1dfUFlfU0w0dmZIdmpkZVV6LWgwZjFnZ3xBQ3Jtc0tsMGZTc3M4Q01GdXhxNDVKTm1SM3RCd3c5UFZySTgzMFloVzNBdWpNTFVkYkdsSldyNnRSR3dObHVlWFVDVDRrMHB5aERLNHpYU3ZFSWRMa2xXUi1FUTJFWGtlckVzYm5lT210RmpmWnZ1T2NKWU13NA&q=https%3A%2F%2Fwww.amazon.com%2FUvex-Bionic-Polycarbonate-Anti-Fog-S8510%2Fdp%2FB001VY3ACE%2Fref%3Dsr_1_5%3Fdchild%3D1%26keywords%3Dbionic%2Bface%2Bshield%26qid%3D1612310300%26sr%3D8-5
Haven't tried the mobile thing, will try it
Thank you!
@@SephirothXRA
Thank you!
Me seeing this: Yooo why ppl calls this a face mask
once opend they only last 6 months
Hi Doc, currently i'm using the p100 filter also.. but, i am just wondering : does the filter N95 on 7502 half face respirator series enough to protect us from covid?
Some people use the N95 filter on the catridge, and then they put a surgery mask on the catridge (double layer for extra protection). What do you think about it?
What type of N95 filter are they using? Is it the 5N11 cartridge that is shown towards the bottom of this link (Under the Blue Tab Prefilters for Cartridges)?
multimedia.3m.com/mws/media/40744O/3m-respirator-cartridge-and-filter-selection-poster.pdf?fn=CartridgeSelectionPoster_English&fbclid=IwAR1bgxyiA6LvPjiPYos0oSpH9hUVqXH1yz2emXyEQYXlEPBnTb3bfuZHIwU
Generally N95s are great for protecting against covid, and are recommended by most government agencies and FDA. When you ask if I think they're enough to protect from covid, I would say yes, n95s are just enough, though we should all go one step further and get the best possible protection with p100s. I think a p100 is going to be better than putting a surgical mask around an N95. If you also look at my video, I demonstrate how I put a large face shield around my p100 respirator; I think this is better than putting a surgical mask around the filter.
@@SephirothXRA the catridge series is 6001 CN (Organic Vapor) combine with 5N11CN . Is it enough to block the covid 19 virus?
Also i would like to ask you about the P100 filter.. as we know there is so many fake product at the market.
In my country (Indonesia) its quite hard for me to find a trusted seller (i've contacted the 3M respresentative in my country but their stuff sold out). So i bought my p100 filter on another online store. it written made in canada with chinese character (7903CN). My point is : could you tell me how to spot the fake and the original 3M filter please 🙏
Awesome 🔥🔥🙏👍👍loved it. Please make a video in hindi. so indian can follow your instructions and come out of covid.
We make in India, AURA-PAPR, Tested by BARC for protection factor. Protection Factor >1000 Very good results. INR 30,000 info@markairindia.com / Call: 9789016308
You should peel of the blue film on ur face shield. Both sides.
Thanks! I took off the blue film from the front months ago. I'll have to check and see if there's one on the back side (or the side that faces my face). It's an anti-fog material (not the regular clear one) so not sure if the blue tint is part of it for that reason. Will circle back around once I get back to it.
Thank you for your service at the front line.
@@user-es3vg9mn5e Thank you! I examined the face shield again. Couldn't find anything on the inside part of it to peel off. Oh well. Still allows me to see through decently well enough.