Millex-GP Filter, 0.22 µm A 25 mm diameter sterile syringe filter with a 0.22 µm pore size Polyethersulfone membrane. Comes in a pack of 50.; Synonyms: disposable syringe filter,sterile syringe filter,syringe filter; find Millipore-SLMP025SS MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich