Agilent Technologies Agilent 7890 Series Maintenance Manual page 238

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Maintaining the TCD
238
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.
6 Wipe the column walls with a tissue dampened with
isopropanol to remove fingerprints and dust.
Gently insert the column into the detector until it
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bottoms. Do not attempt to force it further.
Slide the column nut and ferrule up the column to the
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adapter and tighten the nut finger tight.
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Good
Maintaining Your GC