MF-Millipore® Membrane Filter, 0.22 µm pore size 25 mm diameter, mixed cellulose esters (MCE) membrane, hydrophilic, white, 100 discs; Synonyms: Cellulose nitrate membrane filter discs,Hydrophilic MCE membrane filter discs,Mixed Cellulose Ester membrane filter discs; find Millipore-GSWP02500 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich