Membrane Diameter 50mm Inlet/Outlet 7~13 mm stepped hose barb connection with 6:100 Luer slip Filtration Area, ft2 ≥ 0.021 Pore Size, μm 0.22/0.45; other Pore size are available. Bubble Point & Air Flow Rate (PTFE 0.22 μm, 0.01 μm for air & gas) Air Flow