This Corning syringe filter has a polypropylene copolymer housing, a hose barb inlet, and a hose barb outlet. The polytetrafluoroethylene (PTFE) membrane provides the best chemical resistance. PTFE is naturally hydrophilic and can be used for venting applications. Manufactured in accordance with ISO 9002 standards. Syringe filter is 100% integrity tested, sterile, and certified nonpyrogenic and noncytotoxic. Sterile. Individually Wrapped. Housing Material: Polypropylene. Filter Style: Pressure Disc. Membrane Material: Polytetrafluoroethylene (PTFE). Membrane Pore Size: 0.2µm. Membrane Diameter: 50mm. Inlet: Hose Barb. Outlet: Hose Barb. Corning #: 431227.