Maintaining the TCD 9
Maintaining Your GC 185
4 Score the column using a glass scribing tool. The score 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 that there are no burrs or jagged
edges.
6 Wipe the column walls with a tissue dampened with
isopropanol to remove fingerprints and dust.
7 Insert the column into the detector until it bottoms.
8 Slide the column nut and ferrules up the column to the
detector and finger-tighten the nut.
9 Pull out 1 mm of column. Tighten the nut an additional
1/4 turn with a wrench or until the column does not move.
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