Dissolved Oxygen Calibration

Single Point Calibration

1. Press the “Single-pt” button.
2. Remove the cap and discard it. The cap is only used for protecting the probe during shipping.
3. Expose the probe to air for 5-30 seconds.
4. Press the “Calibrate” button. The screen should show “Successful Calibration;" otherwise, retry the calibration.

Dual Point Calibration (Optional)

1. Press the “Dual-pt” button.
2. Remove the cap and discard it. The cap is only used for protecting the probe during shipping.
3. Press the “Calibrate” button. The screen should show “Successful Calibration;" otherwise, repeat steps 1-3.
4. Place the probe in the Dissolved Oxygen solution, and stir to remove trapped air.
5. Let the probe sit in the solution for 10-90 seconds.
6. Press the “Calibrate” button. The screen should return to the main screen for Dissolved Oxygen; otherwise, repeat steps 4-6.