PureFlo SKV Series Capsule, Dual Layer PES 0.8 micron / 0.2 micron PES Membrane (Sterilizing Grade), 2.5", S-Size, Effective Filtration Area 1,250 cm2, 1/8” Bleed Valves Vent/Drain, 1.5" Tri-Clamp (Inlet/Outlet), Factory sterilized by ETO