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3 Installation
940 Professional IC Vario TWO (2.940.2100)
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37
3.19
Connecting and rinsing the guard column
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
(Ion Chromatogra-
phy product area), or it can be obtained directly from your representa-
tive.
CAUTION
New guard columns are filled with a solution and sealed with stoppers
or caps on both sides.
Before inserting the guard column, ensure that this solution can be
mixed with the eluent being used (follow the information provided by
the manufacturer).
NOTE
The guard column may not be connected until after the instrument has
already been put into operation once
. The
guard column and the separation column have to be replaced by a cou-
pling (6.2744.040) until then.
Accessories
For this step, you need the following accessories:
