System storage
If the instrument is not going to be used for a couple of days or longer, also perform the
following:
•
Fill the system and inlets with storage solution (e.g., 20% ethanol) using the System
CIP method.
Column cleaning
After a method run is completed, perform the following:
•
Clean the column with one or several cleaning solution(s) using the Column CIP
method.
Column storage
If the column is not going to be used for a couple of days or longer, also perform the
following:
•
Fill the column with storage solution (e.g., 20% ethanol) using the Column CIP method.
pH electrode storage
If pH monitoring will not be used for a week or longer, perform one of the following ac-
tions:
•
Inject new storage solution into the pH flow cell.
•
Replace the pH electrode with the dummy electrode that is installed in the pH valve
on delivery.
In the following situations, in order to increase the lifetime of the pH electrode, use the
By-pass position and store the electrode in storage solution inside the pH flow cell:
•
pH monitoring is not needed during the run.
•
Organic solutions are used.
•
Extremely acidic or extremely basic solutions are used.
For further information on how to prepare the pH electrode for storage, refer to ÄKTA
avant User Manual.
146 ÄKTA avant Operating Instructions 29101556 AB
6 Run a method
6.5 After run procedures
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