With handheld and portable TDS tester, you can test the quality of various water in the following situations: water purification applications, wastewater regulation, aquaculture, hydroponics, agriculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, food processing, physics & chemistry teaching, water treatment, cosmetics, wine, home, office, travelling and more.

Function:

1.       Measures electrical conductivity (EC,µS/cm), total dissolved solids (TDS, mg/L), temperature (℃) and Fahrenheit (℉)

2.      Features:

●   Voltage: CR2032 Battery, DC3V

●   Press on/off button to start/finish

●   Press mode button to select different function

●   Show TDS data 0-9999 ppm at accuracy ±2%

●   Show temperature 0-99℃ at accuracy ±3℃

●   Show EC data 0-9999 µS at accuracy ±2%

●   Hold the TDS data automatically

●   Clear the TDS data to zero for each test

●   Shut off automatically after 30 seconds, or press on/off button 3 seconds

●   Factory calibrated

●   Large LCD screen

●   Low-power backlight to identified water quality and can be used day and night

      direct drinking water: green light, TDS≤40ppm

      un-direct drinking water: red light, TDS＞40ppm

●   Auto temperature compensation from 5-50℃

●   1000 hours for continuous testing

●   3 years warranty

3.      TDS Reference:

●   0-60 ppm: Pure Drinking Water

●   60-200 ppm: Tap Water

●   200-360 ppm: Washing Water

●   ﹥360ppm: Polluted Water

Examples:

1.        Aquarium: TDS data big, change the water in time

2.        Mariculture: test and get TDS data, then keep records for future retest

3.        Agricultural: test fertilizer and get TDS data, then keep records for future remaking

4.        Domestic water: hard water is generally 100-150ppm(scaled), very hard water is bigger than 400ppm(seriously scaled);

5.        Deep well water: TDS data bigger than 300ppm, indicating that impurities are too high

6.        Laundry: test water before washing, then test again of last used, data is not too much difference

7.        Purified water: smaller than 50ppm, mineral water between 100-200ppm

8.        Pure alcohol: ≤0ppm

9.        Washing vegetables or fruits: TDS data big, indicating chemical pollution

10.     Swimming pool: TDS data big, change the water in time

P.S. The U.S. EPA’s Maximum Contaminant Levels of TDS for human consumption is 500 ppm.