TDS Total Dissolved Solids Meter

Total dissolved solids (TDS) are the total weight of all solids (minerals, salts, and metals) that are dissolved in a given volume of water, expressed in parts per million (PPM). The higher the TDS level, the greater the probability of harmful contaminants.

This TDS Total Dissolved Solids meter can be used to:

• Check the performance of your water filter or water purifier
• Test for water hardness (1 grain = 17ppm)
• Monitor the quality of your drinking water
• Monitor pools, spas, aquariums and hydroponics

Taking TDS Measurements

1. Remove the protective cap.
2. Press the On/Off button to turn the TDS meter on.
3. Submerge the end of the meter into the water/solution no higher than the end of the ridged plastic. About 1″ is plenty. Do not submerge the entire TDS meter in water or dip beyond the maximum immersion level (approximately 1.5″). It is not water-tight and will be damaged if water enters the unit.
4. Lightly stir the meter to dislodge any air bubbles.
5. Wait until the display stabilizes. Once the reading
   stabilizes (approx. 10 seconds), press the HOLD button
   to view the reading out of the water.
6. If the meter displays a flashing ‘x10’ symbol, multiply
   the reading by 10.
7. After use, shake off any excess water from yourmeter. Replace the cap.

Taking Temperature Measurements

1. Once the meter is on, the temperature function can be
   used at any time, in or out of liquid.
2. Press the TEMP button. The display will switch to
   temperature (in Celsius). Press again to switch to Fahrenheit.
3. To return to TDS mode, press the TEMP button again.

Changing the Batteries

1. Remove the battery compartment by pulling off the top cap.
2. Install new batteries (2x LR44 1.5V Button Cells). Be sure
   the batteries are properly aligned.
3. Replace the battery compartment. The meter will turn
   on automatically.

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