AXEON S-200 Membrane Antiscalant, 5 GallonKeep Your RO System Running Smoothly! AXEON S200 Membrane Antiscalant is an effective antiscalant, specially formulated for feedwater with the highest levels of metal oxides, silica and scale forming minerals. It inhibits polymerization of reactive silica and disperses colloidal (non reactive) silica. It is effective over a wide range of concentrations and does not flocculate dissolved polymers such as residual coagulants, iron or aluminum rich