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| - In stage 1 and 7, water flows through pre one - micron filter pads (1 micron equals 1/25,000th of an inch), which remove suspended particles such as silt, sediment, cyst (Giardia, Cryptosporidium), sand, rust, dirt, and other un-dissolved matter In stage 2, water flows through the fine mesh pre-resin media that reduces fluoride below 0.5 ppm.
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