With a TDs of 896 there really is only one RO/DI unit to consider and thats the Spectrapure MaxCap. No other unit on the market has a individually hand tested and guaranteed 98+% rejection rate RO membrane or custom blended DI resins designed for water such as that. It will outperform any other unit available guaranteed. Its what I ended up going with when a normal 75 GPD RO membrane would only get me down to about 15 TDS and DI only lasted 150 gallons per refill. I now get a RO only TDS of 5-6 and DI lasts a minimum of 630 gallons per cartridge for the MaxCap and the SilicaBuster has over 1900 gallons on the very first cartridge and its still at 0 TDS. My savings in DI alone has already paid for the difference in initial cost, not to mention I am getting much better final water quality.
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