Shop › 820607 - Membrane, 25 mm, PTFE for Gas Diffusion, 12-pk 820607 - Membrane, 25 mm, PTFE for Gas Diffusion, 12-pk $117.98 FIAlab PN 820607 FIAlab PN 820607 Add To Cart Added! You Might Also Like 79167 - Flow Cell Window Replacement Kit: 2 Teflon seals, 2 o-rings, 2 SMA connectors, 2 jam nuts, 2 silica flow cell windows $177.50 82063 - C type dialysis membrane, pre-mounted, 12-pk $226.39 53004 - Valve Rotor: 6-port injector, Valcon E2 $109.48 79153 - Flow Cell Window Replacement Kit: 6 Teflon seals, 2 SMA connectors, 2 jam nuts, 2 silica flow cell windows $177.50 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk $381.57