ICS-3000 Ion Chromatography System
320 Doc. 065031-04 1/08
9.24.4 Replacing an Amperometry Cell Reference Electrode
When to Replace the Reference Electrode
Replace the reference electrode if performance problems occur that are
not corrected by regenerating the electrode. Performance problems can
include no pH readouts, a shift in Ag/AgCl reference potential or
incorrect readouts, baseline spikes, or a decreased response even with a
freshly polished working electrode. The reference electrode typically lasts
from 3 months to 1 year, depending on use.
NOTE To regenerate a reference electrode, soak it in a
solution of 1 M KCl and 1 M HCl.
Items Needed
• pH-Ag/Ag/Cl reference electrode (P/N 061879)
Reference Electrode Replacement Procedure
1. Turn off the cell voltage from the Control panel in Chromeleon or
Chromeleon Xpress.
2. Turn off the pump flow from the Control panel in Chromeleon or
Chromeleon Xpress or press
PUMP FLOW on the front of the pump.
3. Disconnect the cell (see Section 9.24.1
).
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