Corning 431225 Nylon Sterile Syringe Filter with Female Luer Lock Inlet/Male Luer Slip Fitting Outlet, Membrane with 0.45 Micron, Polypropylene Housing, 25mm Diameter (Case of 50) Pressure syringe style filter has a membrane pore size of 0.45m and a membrane diameter of 25mm Syringe filter has a polypropylene copolymer housing, a female luer lock inlet, and a male luer slip outlet Nylon (NY) membrane is naturally hydrophilic, surfactant-free, and offers the lowest extractables Individually wrapped filter is 100% integrity tested, sterile, and certified nonpyrogenic and noncytotoxic