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7.6.6 Storage of the pH electrode
Maintenance interval
When pH monitoring is not used, the pH electrode can be stored in storage solution inside
the pH flow cell. If pH monitoring is not used for a week or longer, inject new storage
solution into the pH flow cell or replace the pH electrode with the dummy electrode that
was installed in the pH valve on delivery.
Required material
The following materials are required:
• Syringe, 25 to 30 ml
•
Storage solution (1:1 mixture of standard buffer, pH 4, and 1 M KNO
3
)
Instruction
Follow the instructions below to fill the pH flow cell with storage solution. The calibration
function is used to switch the position of the pH valve. However, no calibration is per-
formed.
Action Step
In the System Control module, on the System menu click Calibrate. 1
Result: The Calibration dialog opens.
In the Calibration dialog, click pH on the Monitor to calibrate drop-down
list. 2
ÄKTA avant User Manual 29035184 AE 305
7 Maintenance
7.6 Maintenance when required
7.6.6 Storage of the pH electrode