Metrohm 940 Professional IC Vario ONE/ChS/PP - Manual (Page 103)

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5 Operation and maintenance
940 Professional IC Vario ONE/ChS/PP (2.940.1300)
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5.16.2 Protecting the separation column
We recommend using the following protective measures so that the sepa-
ration column retains its separating efficiency for as long as possible:
￭ Microfilter both the sample and the eluent (0.45 µm filter) and aspirate
the eluent via the aspiration filter (6.2821.090) as well.
￭ Always use a guard column. Information regarding which guard col-
umn is suitable for your separation column can be found in the
Metrohm IC Column Program (which is available from your
Metrohm representative), the leaflet provided along with your separa-
tion column, the product information about the separation column at
http://www.metrohm.com (Ion Chromatography product area), or
obtained directly from your representative.
￭ Always use the pulsation absorber.
5.16.3 Storing the separation column
Always store separation columns you do not need in a sealed and filled
state according to the column manufacturer's specifications.
5.16.4 Regenerating the separation column
The separation column can be regenerated according to the column man-
ufacturer's specifications if the separation characteristics of the column
have deteriorated. You can find information on regenerating separation
columns available from Metrohm on the leaflet provided with every col-
umn.
NOTE
Regeneration is intended as a last resort. It should not be carried out
regularly.