Shop › 820607 - Membrane, 25 mm, PTFE for Gas Diffusion, 12-pk 820607 - Membrane, 25 mm, PTFE for Gas Diffusion, 12-pk $91.84 FIAlab PN 820607 FIAlab PN 820607 Quantity: Add To Cart Added! You Might Also Like 17047 - Bulb for HL-2000-LL $217.73 82066 - Membrane, dialysis, type C, for quick-release sandwich cell, 12-pk $451.98 79153 - Flow Cell Window Replacement Kit: 6 Teflon seals, 2 SMA connectors, 2 jam nuts, 2 silica flow cell windows $172.33 53004 - Valve Rotor: 6-port injector, Valcon E2 $106.29 820603 - Membrane, 25 mm, Polypropylene for Gas Diffusion, 12-pk $91.84