AMTAST PTFE Membrane Disc Filter, Hydrophobic, 47mm Diameter, 0.22µm Pore Size (Pack of 50)

PTFE membrane is made from expended polytetrafluoroethylene which provides a superior chemical compatibility. It is naturally hydrophobic and suitable for venting or gas/air filtration. Specifications: 1. Diameter: 1.85inches (47 mm) 2. Pore Size: 0.22μm. 3. Wettability: Hydrophobic 4. pH: 1~14 5. Water Flow rate: 0.22μm: ≥6mL/min/ cm2@1bar (14.5 psi); 0.45μm: ≥30mL/min/cm2@1 bar (14.5 psi) 6. Bubble point@23°C: 60%IPA: 0.22μm: ≥1000mbar(10.2psi); 0.45μm: ≥600mbar (5.8psi) 7. Color: White 8. Surface: Plain 9. 50pcs per pack