Agilent Technologies Agilent 7890 Series Maintenance Manual page 269

C A U T I O N
Maintaining Your GC
Wear clean, lint-free gloves to prevent contamination of parts with
dirt and skin oils.
Place a septum (if the column id is
3
column nut, and ferrule on the column.
Ferrule
Column nut
Septum
Score the column using a glass scribing tool. The score
4
must be square to ensure a clean break.
5 Break off the column end by supporting it against the
column cutter opposite the scribe. Inspect the end with a
magnifying loupe to make certain there are no burrs or
jagged edges.
Wipe the column walls with a tissue dampened with
6
isopropanol to remove fingerprints and dust.
7 Install the capillary column.
Maintaining the NPD
≤
0.1 mm), capillary
Bad
Good
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