To Condition A Packed Column - Agilent Technologies Agilent 7890 Series Maintenance Manual

To Condition a Packed Column

WA R N I N G
WA R N I N G
C A U T I O N
Maintaining Your GC
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
Do not use hydrogen as the carrier for conditioning! It could vent
into the oven and present an explosion hazard.
Load the GC maintenance method
2
become ready.
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.
Install the proper liner in the inlet and attach the
3
column. (See "To Install a Packed Metal Column"
page 90.)
Cap the detector(s) fittings with the capillary adapter,
4
no- hole ferrule and column nut (FID and NPD) or
1/8- inch cap (FPD and TCD).
Enter a column flow as recommended by the packing
5
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
Maintaining the Purged Packed Inlet
and wait for the GC to
6
on
97