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 Quantity: Add To Cart Added! You Might Also Like 17047 - Bulb for HL-2000-LL $224.26 82060 - Polypropylene gas diffusion membrane tape kit (12-pk) $175.38 71011 - Ion Exchange Column for MTB Sulfate $381.57 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk $381.57 41231 - Pressure Lever Cassette/Cartridge for FIAlyzer-FLEX Peristaltic Pump $166.87