Membrane Wettability Demo by Sterlitech

Check out this quick comparison on membrane wettability of PTFE and Cellulose Acetate membranes.
Sterlitech Cellulose Acetate Membranes
Hydrophilic, pure cellulose acetate (CA) membrane filters are one of the lowest protein binding filters available; ideally suited for general filtration and biological/clinical analyses requiring maximum protein recovery.
Our cellulose acetate membrane filters provide superior throughput and reduce the need for filter changes; effectively decreasing both cost and process times. The hydrophilic nature and durable physio-chemical properties of these membranes support a wide range of samples and applications, including: proteinaceous solutions, rigorous or automated processes, and thermal/pressure intensive conditions.
These filters are produced from an exclusive impregnation process, ensuring pore-size and material uniformity for consistent flow rates, analytical precision, and repeatable results.
Additionally, our cellulose acetate membranes are completely uncompromised up to 135°C (275°F), retaining dimensional strength throughout both autoclave and steam sterilization.
Sterlitech PTFE Membranes
PTFE membranes are available in hydrophilic, hydrophobic, unlaminated, and laminated options for a wide range of applications and temperatures.
Unlaminated PTFE filters are chemically and biologically inert, stable up to 260°C (500°F), and naturally hydrophobic; they are very useful for aerosol sampling, air venting, and gas filtration, especially in environments also containing water vapor. These membranes are manufactured through a patented process to form a high-porosity, uniformly thick, thermostable, pure ePTFE structure.
Laminated PTFE possesses the qualities of standard unlaminated hydrophobic membranes, with the added benefit of a backing layer making them thicker and easier to handle. Sterlitech offers our own line of laminated hydrophobic PTFE along with a wide variety of membrane options from Aspire.
For filtering aqueous solutions, we offer hydrophilic PTFE membrane filters from Advantec. With these filters, there is no need to pre-wet the membrane or flush pre-wetting chemicals. The hydrophilic PTFE membranes are able to maintain filtration integrity, reduce interference with biological processes, and maximize shelflife. Sterlitech's hydrophobic PTFE can also be used for filtering aqueous solutions, if pre-wetted with alcohol.
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