Agilent Technologies 7000 Series Operating Manual page 34

2 Installing 8890 GC Columns
To Install a Capillary Column in a Split/Splitless Inlet
10 Adjust the column position so the septum is even with the bottom of the
Never use a wrench to tighten a self-tightening nut. This may result in damage
C AU T I O N
to the nut or instrument.
11 For the self-tightening column nut, finger-tighten until it begins to grip the
12 Start the carrier gas flow.
13 Verify flow by submerging the free end of the column in isopropanol. Look for
Insulation cup
Reducing nut
Capillary column
Ferrule (inside nut)
Inlet column nut
Septum
Figure 3.
34
column nut.
column, then turn an additional 30 to 60 degrees until tight.

For the standard column nut, (shown in
additional 1/4 to 1/2 turn. The column should not slide with a gentle tug.
bubbles.
Installing a capillary column for a split/splitless inlet
Figure 3) tighten the nut an
4 to 6 mm
7000/7010 Series TQ GC/MS Operating Manual
The traditional inlet
column nut is shown,
and the recommended
self-tightening inlet
column nut is also
provided but not shown.