4 Maintaining Capillary Columns
To Condition a Capillary Column
Maintaining Your GC 35
6 Turn off all detectors.
7 Set a minimum velocity of 30 cm/s, or as recommended by the column manufacturer. Let
gas flow through the column at room temperature for 15 to 30 minutes to remove air.
8 Program the oven from room temperature to the maximum temperature limit for the
column. Increase the temperature at a rate of 10 to 15 °C/min. Hold at the maximum
temperature for 30 minutes.
9 Place GC in maintenance mode: Maintenance > Instrument > Perform Maintenance >
Maintenance Mode > Start Maintenance and wait for the GC to become ready.
Be careful! The oven and/or detector may be hot enough to cause burns. If the detector is
hot, wear gloves to protect your hands.
Wear safety glasses to protect your eyes from flying particles while handling, cutting, or
installing glass or fused silica capillary columns. Use care in handling these columns to
prevent puncture wounds.
10 Attach the column to the detector. For details, select your specific detector.
• To Install a Capillary Column in the FID
• To Install a Capillary Column in the NPD
• To Install a Capillary Column in the TCD
• To Install a Capillary Column in the ECD
• To Install a Capillary Column to the FPD+
11 Exit maintenance mode. Select Maintenance > Instrument > Perform Maintenance >
Maintenance Mode > Finished.
12 Restore the analytical method.
• For FID or any FPD+, immediately turn off the flame.
• For NPD, immediately turn off the bead.
13 After the GC becomes ready, wait 10 minutes, then ignite the detector flame or bead.
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