GE AKTA avant User Manual page 306

7 Maintenance
7.6 Maintenance when required
7.6.6 Storage of the pH electrode
Step
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Action
Click Prepare for Calculation.
Result: The pH valve switches to the calibration position.
Prepare at least 10 ml storage solution by mixing equal volumes of a stan-
dard buffer, pH 4, and a 1 M Potassium Nitrate (KNO
Fill a syringe with approximately 10 ml of the storage solution. Connect the
syringe to the pH valve port Cal, and inject the storage solution.
Click Close.
Result: The pH valve switches back to the default position and the Calibration
dialog closes. No calibration is performed.
) solution.
3
ÄKTA avant User Manual 29035184 AE