Connecting And Rinsing The Guard Column - Metrohm 930 Compact IC Flex ChS Manual

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3.16

Connecting and rinsing the guard column

930 Compact IC Flex ChS (2.930.1200)
Push the end of the purge needle (6.2816.040) over the end of
￭
the purge capillary on the purge valve.
Insert the syringe (6.2816.020) in the Luer connector of the purge
￭
needle.
Open the purge valve using the rotary knob (approx. ½ turn).
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Switch on the high-pressure pump in MagIC Net.
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Use the syringe to aspirate eluent until there are no more air bub-
￭
bles in the eluent aspiration tubing.
Switch off the high-pressure pump in MagIC Net.
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Seal the purge valve using the rotary knob.
￭
Remove the syringe from the purge needle.
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Pull the purge needle out of the purge capillary.
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5 Rinsing the instrument without columns
Rinse the instrument (without columns) with eluent for 10
￭
minutes.
Guard columns protect separation columns and significantly increase their
service life. The guard columns available from Metrohm are either actual
guard columns or guard column cartridges used together with a cartridge
holder. The process of installing a guard column cartridge into the corre-
sponding holder is described in the guard column leaflet.
NOTE
Metrohm recommends always working with guard columns. They pro-
tect the separation columns 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 Column Program (which
is available from your Metrohm representative), the leaflet provided
along with your separation column or the product information about
the separation column at
phy product area), or it can be obtained directly from your representa-
tive.
http://www.metrohm.com
3 Installation
(Ion Chromatogra-
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