Agilent Technologies 7820A Manual page 65

Maintaining Your GC
Ferrule
Column nut
Septum
6 Score the column using a glass scribing tool. The score must
be square to ensure a clean break.
7 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
8
isopropanol to remove fingerprints and dust.
Position the column so it extends 1 to 2 mm above the end of
9
the ferrule. Slide the septum up the column to hold the
column nut at this fixed position.
Maintaining the Purged Packed Inlet
Bad
Good
5
65