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DISCONTINUED AND NO LONGER AVAILABLE - If you are using a reverse osmosis system that uses this filter it is time to replace your RO system. You may keep your current faucet and supply line connections by replaceing only the filter system and tank. Faucets can be deleted from many of our RO systems.
Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.
See our selection of TDS meters under Water Tests