Shop › 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk 820605 - Membrane, 25 mm, PTFE for Phase Separation and Debubblers, 10-pk $381.57 FIAlab PN 820605 FIAlab PN 820605 Add To Cart Added! You Might Also Like 820607 - Membrane, 25 mm, PTFE for Gas Diffusion, 12-pk $117.98 71010 - Cadmium Column for Nitrate Reduction $337.13 24055 - 4-Way Manual Switching Valve with Diagonal Flow $222.14 71011 - Ion Exchange Column for MTB Sulfate $381.57 79167 - Flow Cell Window Replacement Kit: 2 Teflon seals, 2 o-rings, 2 SMA connectors, 2 jam nuts, 2 silica flow cell windows $177.50