To Condition A Packed Column - Agilent Technologies 7820A Manual

To Condition a Packed Column

WA RN IN G
WA RN IN G
C AU TI O N
Maintaining Your GC
Gather the following:
1
• Capillary adapter, column nut, and no-hole ferrule (for
FID), or 1/8-inch Swagelok cap (for TCD)
• 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.
3 Install the proper liner in the inlet and attach the column.
(See "To Install a Packed Metal Column"
Cap the detector(s) fittings with the capillary adapter,
4
no-hole ferrule and column nut (FID) or 1/8-inch cap (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
Raise the oven temperature slowly to the conditioning
6
temperature for the column. The conditioning temperature is
never higher than the maximum temperature limit for the
column; 30 °C less than the maximum is usually sufficient.
Continue conditioning overnight at the final temperature.
7
Cool the oven to room temperature with carrier flow on.
Maintaining the Packed Column Inlet
and wait for the GC to
on page 108.)
6
115