Shop › 820603 - Membrane, 25 mm, Polypropylene for Gas Diffusion, 12-pk 820603 - Membrane, 25 mm, Polypropylene for Gas Diffusion, 12-pk $91.84 FIAlab PN 820603 FIAlab PN 820603 Quantity: Add To Cart Added! You Might Also Like 41231 - Pressure Lever Cassette/Cartridge for FIAlyzer-FLEX Peristaltic Pump $162.01 71015 - Cadmium Column for Nitrate Reduction (Package of two, second one 25% off) $536.34 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk $370.46 71011 - Ion Exchange Column for MTB Sulfate $370.46 79153 - Flow Cell Window Replacement Kit: 6 Teflon seals, 2 SMA connectors, 2 jam nuts, 2 silica flow cell windows $172.33