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pH Calibration

Single Point Calibration

  1. Press the “Single-pt” button.
  2. Enter the pH level for the midPt. Should be 7.
  3. Press the “Calibrate” button.
  4. Remove the cap and rinse the probe.
  5. Pour a small aliquot of solution in the beaker. This aliquot should be discarded after use.
  6. Place the probe in the solution for 1-2 minutes.
  7. Press the “Calibrate” button.
  8. The screen should flash “Calibration Successful” and you will be returned to the main screen for pH; otherwise, repeat steps 2-7.

Two Point Calibration (Optional)

  1. Press the “Two-pt” button.
  2. Enter the pH level for the mid point. Should be 7.
  3. Press the “Calibrate” button.
  4. Remove the cap and rinse the probe.
  5. Pour a small amount of mid point solution in the cup.
  6. Place the probe in the solution for 1-2 minutes.
  7. Press the “Calibrate” button.
  8. Do not pour solution back in solution bottle.
  9. The screen should show “Calibration Successful”. If it did not then retry the calibration.
  10. Enter the pH level for the low point. Should be lower than 7.
  11. Press the “Calibrate” button.
  12. Pour a small amount of low point solution in the cup.
  13. Place the probe in the solution for 1-2 minutes.
  14. Press the “Calibrate” button.
  15. Do not pour solution back in solution bottle.
  16. The screen should show “Calibration Successful” and you will be returned to the main screen for pH. If it did not then retry the calibration.

Three Point Calibration (Optional)

  1. Press the “Three-pt” button.
  2. Enter the pH level for the mid point. Should be 7.
  3. Press the “Calibrate” button.
  4. Remove the cap and rinse the probe.
  5. Pour a small amount of mid point solution in the cup.
  6. Place the probe in the solution for 1-2 minutes.
  7. Press the “Calibrate” button.
  8. Do not pour solution back in solution bottle.
  9. The screen should show “Calibration Successful”. If it did not then retry the calibration.
  10. Enter the pH level for the low point. Should be lower than 7.
  11. Press the “Calibrate” button.
  12. Pour a small amount of low point solution in the cup.
  13. Place the probe in the solution for 1-2 minutes.
  14. Press the “Calibrate” button.
  15. Do not pour solution back in solution bottle.
  16. The screen should show “Calibration Successful”. If it did not then retry the calibration.
  17. Enter the pH level for the high point. Should be higher than 7.
  18. Press the “Calibrate” button.
  19. Pour a small amount of high point solution in the cup.
  20. Place the probe in the solution for 1-2 minutes.
  21. Press the “Calibrate” button.
  22. Do not pour solution back in solution bottle.
  23. The screen should show “Calibration Successful” and you will be returned to the main screen for pH. If it did not then retry the calibration.