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Reverse Osmosis Technlogy Water Education
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Basic Terms for Reverse Osmosis System


  • RO= Reverse Osmosis
  • GPD = Gallons per Day (flow rate)
  • PSI = Pounds per Square Inch (pressure)
  • TDS = Total Dissolved Solids (contaminants)
  • PPM = Parts per Million (unit used to measure TDS level)
  • TDS Meter = A digital meter for measuring the TDS level in the water


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