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 71011 - Ion Exchange Column for MTB Sulfate $370.46 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk $370.46 17047 - Bulb for HL-2000-LL $217.73 82060 - Polypropylene gas diffusion membrane tape kit (12-pk) $170.27 53004 - Valve Rotor: 6-port injector, Valcon E2 $106.29