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 82060 - Polypropylene gas diffusion membrane tape kit (12-pk) $170.27 240370 - Backpressure cartridge, 20 psi $174.39 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk $370.46 79150 - Flow Cell Window Replacement Kit: 6 Teflon seals and 2 silica flow cell windows $100.10 24055 - 4-Way Manual Switching Valve with Diagonal Flow $215.67