Maintaining the TCD 12
Maintaining Your GC 235
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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