The Science of Smokeability: Experiments to understand what makes quality, safe, smokeable cannabis

In this video Dr.Allison Justice, a horticulture scientist and Dr. Riley Kirk, a natural product chemist walk you though the setup for a cannabis smoking experiment.
The experiment is part of a large series of smoking experiments called the Science of Smokeability (SOS). The goal of SOS is to look at the physical and chemical components of smoking under different conditions.
In phase 1 of SOS, shown in this video, we are evaluating three different water activities on the smokeability of flower; 0.85 aW (the wettest flower), 0.65 aW, and 0.45 aW (the driest flower).
The machine is measuring pull resistance, puff volume, puff topography, temperature, and a few other variables. We are measuring the chemistry from the smoke samples including cannabinoids, terpenes and toxicants.
The other portion of phase 1 has already been completed, this included the subjective analysis of about 300 participants who smoked the 0.45 aW flower and 0.65 aW flower and gave their opinions on the smokeability via surveys. Stay tuned for the results on the chemical analysis!
Drop what smoking experiments you want to see in the comments!!

[@freddythefrog]

Just cruising thru YT hearing snippets and I recognized your voice Dr. Riley. Heard you with Queen of the Sun Grown earlier in the year… Learning all the time… thank you… very pleasant and clear voice. Good info… This summer was my first outdoor grow. A lot of first timer mistakes… I made them all… sunburned seedlings for one(jumped the gun on whether they were hardened off and ready for the big bright thing) … Couldn’t believe the size of outdoor plants 👍🏼. C’mon flowers, finish… : )
I like the smaller plants in the tents so one can be creative mixing up Autos and Photos… but will grow autos next year outdoors…
I’m in the PNW. Looking like photos are a crap shoot here if you don’ start plants inside in the spring.
-For dry and cure- I challenge anyone who can beat Cannatrol’s cool cure… biggest improvement to my weed. ✌🏼🐸

[@toromothy]

something I'd like to see covered is white ash, here in the UK people use it as a metric of quality in the smoke very often. going as far as to not use cannabis that burns black. in my experience the higher quality cannabis does burn white, but would be great to know the real science behind this

[@cannabichem]

YES! we are studying ash color in every phase of the study…. & evaluating ash for organic composition. The 0.85 aW (the wettest weed) has the lightest ash so far 👀👀👀

[@SetTheCurve]

As the person above alluded, I’ve noticed that ash color has more to do with moisture level of bud than anything else. Dry bud burns hot, harsh, and dirty. Instead of vaporization you get decomposition

[@growinginohio]

Anybody researching marijuana is my friend ❤

[@brianbyrne7506]

As a long time follower and a cannabis user as well as a manager at a medical dispensary I’d like for you guys to run tests to show if all strains convert thc-a into delta 9 the same (I don’t think they do). I’m guessing that all kinds of things would affect this, even what this test your doing here might affect conversion rates. Also I would love for you guys to show if the thc number is as arbitrary as I believe by showing that every bud on a plant will in fact test differently. This with the other test should show if the THC number even means anything at all really. Knowing that myrcene helps thc break the blood brain barrier makes me feel that everything we thought we knew about cannabis was just mostly wrong. Love the show by the way!! Love what you guys do for our community!!

[@yayah0677]

Good stuff!!!

[@evarlast]

I can't wait to see the results of analysis and how it compares to other extracts like rosin and tincture.

[@Likenodude]

Can’t wait for the flush study

[@zayzayzooted]

for the machine i feel like it needs a more natural tilt and bent to where the joint is cause naturally speaking i tend to hold the joint facing all the way down to build a resin ring and simultaneously spinning the joint back and forth with hits lasting 3-5 seconds and letting the cherry cool down but this is for real flavor chasers lol of course with quality product only****

[@ryansmiley5495]

Me too,..for science

[@albos_smoke_ct2838]

Can y’all do something on the resin rings on joints and why they do or do not appear.

[@Ano_Niemand]

Thats how we create AI singularity 🤣

[@douglasedwards1923]

like to see you both "Take a hit" & finish the the vid baked

[@Kid420]

Ain't no way you are 101 years old, Douglas.

[@maddog2228]

🇬🇧 high all 👍 sorry for the wording but I love your shit you go deeper than whale shit ❤❤❤❤😊

[@punishedgringle69]

they taught a robot to smoke weed

[@waltlongmire6277]

🥼🥼