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Action
Comment
Problem
•
Equilibrate more, e.g. pump wash with
liquid (check that pump wash is included
in the wizard selections)
•
Repack column
Air not totally eliminated.
Poorly defined UV-peak.
•
Check that slurry concentration is not
too high. If so repack column.
Compression too high
causing triggering of
pressure alarm
•
Change the liquid in the air trap and
retest.
The air trap buffer was not
completely replaced by
mobile phase buffer before
starting the Intelligent
Packing method.
A dip in the baseline
during performance
evaluation.
•
Ensure that no connections are leaking.
Change gaskets if necessary.
Leakage in the tubing
between system and column
or in the connection between
the end cell and adapter rod
tubing.
The retention volume
observed during
evaluation is higher
than expected.
•
Make sure that the correct sample with
the correct concentration is used.
Too diluted sample solution
or wrong sample solution.
No elution peaks
observed.
148
AxiChrom 50, 70 and 100 columns Operating instructions 28-9331-08 AG
7 Troubleshooting
7.1 Performance