AXEON S–200 Membrane Antiscalant, 5-Gallon

Protect RO Membranes From Scale With AXEON S-200 Antiscalant

Scale formation on RO membranes — from silica, calcium carbonate, iron, manganese, and other minerals in feedwater — is one of the primary causes of premature membrane failure. As minerals concentrate on the membrane surface, they reduce permeate flow, lower rejection rates, and eventually require costly membrane replacement or aggressive chemical cleaning.

AXEON S-200 membrane antiscalant is injected upstream of the RO membrane via a chemical dosing pump. The formula inhibits polymerization of reactive silica and disperses colloidal (non-reactive) silica, while also suppressing carbonate and sulfate scale formation. It is effective at a wide range of dosing concentrations and — critically — does not cause flocculation of dissolved polymers or residual coagulants in the feedwater.

Key Features & Benefits

• Inhibits reactive silica polymerization — prevents silica from forming hard scale deposits on the RO membrane surface, which is particularly important for high-silica well water sources.
• Disperses colloidal silica — keeps non-reactive silica in suspension rather than allowing it to deposit on the membrane surface.
• Suppresses carbonate and sulfate scale — effective against the most common mineral scales that form when feedwater minerals concentrate during the RO rejection process.
• Does not flocculate dissolved polymers — safe for use with feedwater that may contain residual coagulants or other dissolved polymers — no unwanted precipitation reactions.
• Wide concentration range effectiveness — effective over a broad range of dosing concentrations, providing flexibility for varying feedwater chemistry conditions.
• 5-gallon quantity — suitable for commercial-scale dosing systems where larger volumes are consumed during the regular operating cycle.

Who Should Use the AXEON S-200 Membrane Antiscalant

Commercial RO system operators treating feedwater with high silica, mineral hardness, or other scale-forming compounds who need to protect their RO membranes from premature scale fouling and extend membrane service life.

Dosing the Antiscalant Correctly

S-200 is injected into the feedwater upstream of the RO membrane using a chemical dosing pump sized to the system's water flow rate. The correct dosing rate depends on feedwater chemistry — particularly silica, calcium, and bicarbonate levels. Run a feedwater analysis and consult AXEON's dosing guidelines to determine the appropriate concentration for your specific water conditions.

Frequently Asked Questions

Is antiscalant required for all RO systems?

It is strongly recommended for feedwater with measurable silica (above ~100 mg/L), high hardness, or elevated levels of scale-forming minerals. For low-mineral municipal water, the need may be lower — but antiscalant use is standard practice in commercial RO systems to protect investment in membrane elements.

How do I inject the antiscalant into the feedwater?

Use a chemical dosing pump (metering pump) installed upstream of the RO membrane — typically after the sediment and carbon pre-filters. Set the dosing rate according to the calculated requirement for your feedwater chemistry and system flow rate.

What concentration do I use?

Dosing rates vary by feedwater chemistry. Review AXEON's product documentation for S-200 and run a Langelier Saturation Index (LSI) or equivalent scaling index calculation for your water to determine the appropriate dosing rate.

How long does a 5-gallon jug last?

Depends entirely on the dosing rate and system flow volume. A commercial system running high flow with high-mineral feedwater will consume the jug faster than a smaller system. Calculate daily consumption from the dosing rate and daily water throughput.