258 Maintaining Your GC
13 Maintaining the G3435A/G3436A FPD
5
Tighten the column nut until it grips the column. Tighten the
nut an additional 1/8 to 1/4 turn with a pair of wrenches.
Snug the septum against the base of the column nut.
6 Use a wafer cutter at 45° to score the column.
7 Snap off the column end. The column may protrude about
1 mm beyond the end of the tool. Inspect the end with a
magnifying loupe to make certain that there are no burrs or
jagged edges.
8 Remove the column, nut, and swaged ferrule from the tool.
9 Wipe the column walls with a tissue dampened with
isopropanol to remove fingerprints and dust.
10 Verify that a capillary adapter is installed in the detector
fitting. (See “To Install a Capillary Column Adapter in the
FPD” on page 255.)
11 Carefully thread the swaged column up into the adapter.
Finger-tighten the column nut, then use a wrench to tighten
an additional 1/8 turn.
145 mm
Score column here
Column measuring tool
Ferrule
Column nut
Good
Bad
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