182 Maintaining Your GC
10 Maintaining the VI
If you are using a standard column nut, you must remove
the interface. For this reason it is recommended that you
use the long column nut. (See “To Remove the VI
Interface” on page 185.)
5 Score the column using a glass scribing tool. The score
must be square to ensure a clean break.
6 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.
7 Wipe the column walls with a tissue dampened with
isopropanol to remove fingerprints and dust.
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