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 82066 - Membrane, dialysis, type C, for quick-release sandwich cell, 12-pk $451.98 17047 - Bulb for HL-2000-LL $217.73 79150 - Flow Cell Window Replacement Kit: 6 Teflon seals and 2 silica flow cell windows $100.10 79167 - Flow Cell Window Replacement Kit: 2 Teflon seals, 2 o-rings, 2 SMA connectors, 2 jam nuts, 2 silica flow cell windows $172.33 240370 - Backpressure cartridge, 20 psi $174.39