Popular ptfe membrane filter 0.2 um for air diam. 30 mm, pore size 0.2 μm, PTFE membrane, non-sterile Whatman® ReZist® syringe filter diam. 30 mm, pore size 0.2 μm, PTFE membrane, non-sterile, pkg of 100 ea; Synonyms: syringe filters,Z612766; find -WHA10463503 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich