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How to test TDS?

Published in Water Quality Testing 2 mins read

Testing Total Dissolved Solids (TDS) involves using a TDS meter to measure the concentration of dissolved substances in a liquid, typically water. According to the provided reference, here's how to effectively use a TDS meter:

Steps for Testing TDS with a TDS Meter

Here's a simple guide on how to test TDS accurately, based on the reference information:

  1. Prepare the Water Sample: Collect the water sample you wish to test.

  2. Turn on the TDS Meter: Power on the TDS meter and ensure it's in TDS mode.

  3. Submerge the Meter: Place the probe or sensor end of the TDS meter into the water sample.

  4. Swirl the Meter: Swirl the TDS meter around in the water for approximately 10 seconds. This ensures the water circulates adequately around the receiver, providing a more accurate reading.

    • This swirling action ensures that all the water is properly exposed to the sensor.
  5. Wait for Stabilization: Allow the reading on the TDS meter to stabilize. This usually takes a few seconds.

  6. Record the Reading: Once the reading is stable, record the TDS value displayed on the meter. This value indicates the concentration of dissolved solids in parts per million (ppm).

Best Practices for Accurate TDS Testing

  • Calibration: Calibrate the TDS meter regularly according to the manufacturer's instructions to maintain accuracy.
  • Temperature: Be mindful of the water temperature, as some TDS meters are temperature-compensated, while others may require manual adjustment.
  • Cleanliness: Keep the TDS meter's probe clean to avoid inaccurate readings. Rinse it with distilled water after each use.

By following these steps, you can effectively test TDS levels in water using a TDS meter and obtain reliable results.

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