Corning® syringe filters sterile, cellulose membrane (surfactant-free with prefilter), diam. 28 mm, pore size 0.2 μm; Synonym: disposable syringe filters, sterile syringe filters, syringe filters; find null-CLS431218 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich.