PureFlo SKV Series Capsule, Highly Asymmetric Dual Layer PES 0.65 micron / 0.2 micron PES Membrane (Sterilizing Grade), 2.5", S-Size, 1/8” Bleed Valves Vent/Drain, Effective Filtration Area 1,250 cm2, 1.5" Tri-Clamp (Inlet/Outlet), Factory sterilized by ETO