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 79166 - Flow Cell Window Replacement Kit: 2 Teflon seals, 2 o-rings, 2 silica flow cell windows $100.10 53004 - Valve Rotor: 6-port injector, Valcon E2 $106.29 79150 - Flow Cell Window Replacement Kit: 6 Teflon seals and 2 silica flow cell windows $100.10 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk $370.46 71011 - Ion Exchange Column for MTB Sulfate $370.46