Whatman® mixed cellulose ester membrane filters gridded white (without pad), pore size 0.45 μm, diam. 47 mm, sterile; Synonyms: Whatman® nitrocellulose membrane filters,Whatman filter,Z745847,membrane filters,syringe filter; find -WHA7141114 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich