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FILTER HOUSING MANUFACTURER
The residential reverse osmosis system tested for Total Dissolved Solids can be done by using a portable hand-held TDS meter testers. Before testing your R.O. water, you need to test your supply water first. Fill a half glass with your cold water supply after letting the water run for 30 seconds. Place the TDS meter (turned on) into the supply water in the glass and look at the TDS reading on the display. Write down this number. This reading expresses Parts Per Million (PPM) and will advice you a comparison for your R.O. water reading. Rinse the TDS meter with the purified water before you pack it. Then open the R.O. faucet and rinse a glass with the R.O. water. Fill a half glass with the R.O. water. Turn the TDS meter on and place it in the glass of R.O. water. Use this reading to compare with the tap water reading. Then it is not hard for you know what is difference between tap water and RO pure water.