Ensuring System Wellness (IC Devices)
Calibrating the ICS-3000/ICS-5000 ED pH Reference Electrode

When to Calibrate:

After installation of a new reference electrode

 Note:

The ICS-5000 ED PdH reference electrode does not require calibration. There is no pH readout when the PdH reference mode is selected.

 

 

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/AgCl 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. On the panel tabset, click the EC Detector tab.

  5. Under Electrochemical Detector Settings, click Calibration.

    The Electrochemical Detector Wellness panel opens.

  6. Under pH Electrode Calibration, click pH Offset Cal.

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

  8. Place the electrode in the second buffer.

  9. Wait for the pH reading to stabilize.

  10. Enter the pH of the second buffer into the pH Slope Buffer Value field.

  11. Click pH Slope Cal.