Measure the Total Dissolved Solids in fresh water. Test tap water, RO water and RO/DI water. Meter displays in triple digit electronic display. Uses two batteries, included.
TDS is measured in whole numbers 999 to 000. There is no decimal point. 000 is the ideal measurement, or 0 TDS.
How to measure: Run RO system for at least two minutes, then collect a sample in a clean dry cup from the output tubing. Remove cap from meter, turn it on and place that meter in the cup of no more than 2" worth of water. Read the results on the LCD display. Always shut off meter when done to save battery life. Do not measure water in a barrel or bucket, as the container may contain TDS and give a false reading.
Blot dry and store in a cool, dry location.
Meter is not fully submersible, only the tip should be placed in water sample.