Conductivity Meter - Calibration

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What is calibration?

Calibration is a vital process that involves evaluating and adjusting the precision and accuracy of equipment. This process is often intended to minimize the bias in instrument reading, and it is an important component of analytical chemistry.

It is important to calibrate conductivity meters, as the cell constants may change with time or due to contamination. A simple method of conductivity meter calibration involves measuring conductivity of a standard solution and adjusting the reading to match the known value.

How to calibrate Orion Star A112 conductivity meter

  1. Make sure the conductivity meter and probe are appropriately plugged in.
  2. Turn the instrument on.
  3. Clean the probe with deionized water, and gently wipe it dry with Kimwipe.
  4. Place the probe in the standard solution and press "Cal" button.
  5. Make sure the conductivity displays 1413 ┬ÁS/cm for the standard solution.
  6. Press "Mode" button, and now the instrument is ready for measurements.
  7. Clean the probe with deionized water, and gently wipe it dry with Kimwipe.
  8. Place the probe in a sample solution and press "Measurement" button.
  9. Repeat steps 7 and 8 with all other sample solutions.
  10. Make sure to clean the probe when finished!

Remember to clean the probe with DI water and dry with Kimwipe between any calibration or sample measurements!

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