The Cary Company's standard grade 2.7" x 10" filter cartridges with expanded PTFE membrane offer high purity filtration with micron ratings from .1 to .45 

Plant Tissue Culture Container(TC-S360)(id:3598526) The vent on the top of cover is sealed by a PTFE filter membrane (pore size: 0.45um) to eliminate 

Google Images for Luer Lock Ptfe Membrane Filter Ec21 Google Images is the worlds largest image Certified standard grade PTFE membrane filter for sale.

GGPTFE-Series High Purity General Grade PTFE Filter Cartridges, with expanded polytetrafluoroethylene (PTFE) membrane, provide superior chemical resistance 

Compact filter for venting and solvent filtration applications Useful for maintaining purified water stored in carboys Features a Teflon PTFE membrane 

PureFlo® PTFE filter capsules are economically priced and highly retentive hydrophobic PTFE membrane filters that have been specially designed for critical 

This 0.2 micron standard grade 2.7" x 30" filter cartridge with expanded PTFE membrane and a flat end cap offers high purity filtration.

While air can pass through the PTFE membrane to enable degassing or venting, the PTFE membrane can filter particles as small as 0.1 micron using depth 

Q: What is the difference between hydrophilic and hydrophobic membrane filters?