unlaminated PTFE membrane filter 0.2 um Sigma Aldrich Nov 16, 2021 · Whatman® membrane filters PTFE pore size 0.2 μm, diam. 47 mm; Synonyms: syringe filter,Whatman filter,Z746312,Whatman filters; find -WHA7582004 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich