Columns and Traps
Installing packed metal columns
Released: March 2004 6850 Series II GC User Information page 48 of 256
Installing packed metal columns
Before following this procedure, make sure an adapter or liner is installed (see
Table 15 on page 44), if needed, and that your column is prepared (see
“Installing ferrules on a metal column” on page 44).
1. Insert the column into the adapter, detector, or inlet liner until it bottoms.
Tighten the nut finger tight.
2. If you are installing a column directly into the detector fitting:
• 1/4-in. column: tighten an additional 3/4 turn with a 9/16-in. wrench
• 1/8-in. column: tighten an additional 1/4 turn with a 7/16-in. wrench
3. If you are installing a column onto an adapter:
Tighten the column nut using two wrenches in opposition, one on the
column nut and the other on the liner or adapter body. This prevents the
liner or adapter from rotating while you tighten the column nut.
• 1/4-in. column: tighten an additional 3/4 turn with a 9/16-in. wrench
• 1/8-in. column: tighten an additional 1/4 turn with a 7/16-in. wrench
4. Establish a flow of carrier gas through the inlet. Heat the oven, inlet, and
detector to operating temperatures. Allow them to cool, and then retighten
the fittings.
5. Condition the column, if needed. (See “Conditioning packed columns” on
page 26.)
Adapter
Prepared column
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