... can remove rust, hair, sand, clay, colloid, floating substances and part of harmful organic matters,Which are bigger than 10um ... residual chlorine, pesticides, organic chemicals, unpleasant taste, floating substances as well as heavy metal particles further 4. (RO) ... unpleasant tasty, odor or color, residual impurities and make water taste better and healthier. How Does the Reverse Osmosis Systems ...