Columns and Traps Part 6. Calibrating your capillary column (optional)
Column calibration procedures
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Procedure: Estimate the actual column length or diameter from the measured flow rate
1. Set oven ramp 1 to 0.00, then verify that the column is defined. For more
information, see "Setting up an isothermal run" on page 87 or "Configure the
column" on page 48.
2. Set the oven, inlet, and detectors temperatures to 35°C and allow them to
cool to room temperature.
3. Remove the column from the detector. See chapter 5 for details.
Caution When you measure the column flow rate, be sure to convert the measurement
to normal temperature and pressure if your measurement device does not report
data at NTP. If you enter uncorrected data, the calibration will be wrong. See
"Interpreting bubble meter flow measurements" on page 79 for details.
4. Measure the actual flow rate through the column using a bubble meter.
Record the value. Reinstall the column.
5. Press [Options]. Scroll to Calibration and press [Enter].
6. From the calibration list, select Column 1 or Column 2 and press [Enter].
7. The GC displays the current calibration mode for the column. In this exam-
ple, the column is uncalibrated.
Select the column to calibrate
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