Metrohm 930 Compact IC Flex ChS/PP - Manual (Page 54)

3.16 Connecting and rinsing the guard column
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930 Compact IC Flex ChS/PP (2.930.1300)
￭ Open the purge valve using the rotary knob (approx. ½ turn).
￭ Switch on the high-pressure pump in MagIC Net.
￭ Use the syringe to aspirate eluent until there are no more air bub-
bles in the aspirated eluent.
￭ Switch off the high-pressure pump in MagIC Net.
￭ Seal the purge valve using the rotary knob.
￭ Remove the syringe from the purging needle.
￭ Pull the purging needle out of the deaerating capillary.
5 Setting the contact pressure of the peristaltic pump
￭ Set the contact pressure of the peristaltic pump (see "Setting the
contact pressure correctly", page 40).
6 Rinsing the instrument without columns
￭ Rinse the instrument (without columns) with eluent for 5 minutes.
3.16 Connecting and rinsing the guard column
Guard columns protect the separation column and substantially increase
its service life. Guard columns available from Metrohm are either actual
guard columns or what are known as guard column cartridges that can be
used together with a cartridge holder. The process for installing a guard
column cartridge in the associated holder is described in the leaflet for the
guard column.
NOTE
Metrohm recommends working with guard columns at all times. They
protect the separation column and can be replaced regularly as needed.
NOTE
Information regarding which guard column is suitable for your separa-
tion column can be found in the Metrohm IC Column Program
(which is available from your Metrohm representative), the leaflet provi-
ded along with your separation column, the product information about
the separation column at
http://www.metrohm.com (Ion Chromatogra-
phy product area), or obtained directly from your representative.