Maintaining the Purged Packed Inlet 6
Maintaining Your GC 97
To Condition a Packed Column
1 Gather the following:
• Capillary adapter, column nut, and no- hole ferrule (for
FID and NPD), or 1/8- inch Swagelok cap (for TCD and
FPD)
• Two 7/16- inch wrenches
• 1/4- inch open- end wrench
• Lint- free gloves
2 Load the GC maintenance method and wait for the GC to
become ready.
3 Install the proper liner in the inlet and attach the
column. (See “To Install a Packed Metal Column” on
page 90.)
4 Cap the detector(s) fittings with the capillary adapter,
no- hole ferrule and column nut (FID and NPD) or
1/8- inch cap (FPD and TCD).
5 Enter a column flow as recommended by the packing
manufacturer or an appropriate flow as follows:
• 20 to 30 mL/min for 2- mm id glass or 1/8- inch od
metal columns
• 50 to 60 mL/min for 4- mm id glass or 1/4- inch od
metal columns
6 Raise the oven temperature slowly to the conditioning
temperature for the column. The conditioning temperature
Do not use hydrogen as the carrier for conditioning! It could vent
into the oven and present an explosion hazard.
Be careful! The oven, inlet, and/or detector may be hot enough to
cause burns. If the oven, inlet, or detector is hot, wear
heat-resistant gloves to protect your hands.
Wear clean, lint-free gloves to prevent contamination of parts with
dirt and skin oils.
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