2 Installing 7890/7820/6890/6850 GC Columns
46 5975/5977 Series MSD Operating Manual
To Calibrate Column Flow Linear Velocity
Capillary columns must be calibrated prior to use with the MS.
Procedure
1 Set Data Acquisition for splitless manual injection, and set up a real time plot
to monitor m/z 28.
2 Press [Prep Run] on the GC keypad.
3 Inject 1 µL of air into the GC inlet and press [Start Run].
4 Wait until a peak elutes at m/z 28. Note the retention time.
5 In OpenLAB, select Method layouts, and click Agilent GC > Configuration
>Columns.
6 Select your installed column from the table.
7 Click Calibrate to display the Calibrate Column dialog.
8 Click Calc Length in the If unretained peak holdup time is known section to
display the Calculate Column Length dialog. (See Figure 9.)
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