Agilent Technologies Agilent 7890 Series Maintenance Manual page 182

Gas chromatograph
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10
Maintaining the VI
182
If you are using a standard column nut, you must remove
the interface. For this reason it is recommended that you
use the long column nut. (See
Interface"
on page 185.)
Ferrule
Column nut
Septum
5
Score the column using a glass scribing tool. The score
must be square to ensure a clean break.
Break off the column end by supporting it against the
6
column cutter opposite the scribe. Inspect the end with a
magnifying loupe to make certain that there are no burrs
or jagged edges.
Wipe the column walls with a tissue dampened with
7
isopropanol to remove fingerprints and dust.
"To Remove the VI
Bad
Good
Maintaining Your GC

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