Ensuring System Wellness (IC Devices)
Calibrating the ED40/50/50A pH Reference Electrode

When to Calibrate:

After installation of a new reference electrode

 

 

Items Needed:

pH 7 buffer

A second buffer of known pH (usually a calibration buffer that most closely matches the pH of the eluent used in your application)

 

  1. Carefully remove the combination pH/Ag-Ag/Cl reference electrode from the amperometry cell, making sure to leave the electrode leads connected to the cell.

  2. Place the electrode into a pH 7 buffer.

  3. Wait for the pH reading to stabilize (about 1 minute).

  4. Open the System Wellness Control Panel for the detector (see  Opening a Wellness Control Panel).

  5. Click the pH 7 script button under pH electrode.

  6. Remove the electrode from the pH buffer, rinse, and then dry it.

  7. Place the electrode in the second buffer.

  8. Wait for the pH reading to stabilize.

  9. Enter the pH of the second buffer into the edit field above the 2nd buffer script button.

  10. Click the 2nd buffer script button.