13 Maintaining the NPD
To Install a Capillary Column in the NPD
214 Maintaining Your GC
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.
7 Install the capillary column.
If the column id is greater than 0.1 mm:
a Gently insert the column into the detector until it bottoms; do not attempt to force it
further.
b Finger-tighten the column nut, then withdraw the column about 2 mm. Tighten the nut
an additional 1/4 turn with a wrench.
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