Operating in Electron Ionization (EI) Mode 3
5977 Series MSD Operation Manual 67
9 Click the Calc Length button in the If unretained peak holdup time is known
section to display the Calculate Column Length dialog.
10 Verify that the parameters listed (temperature, inlet and outlet pressures,
and gas type) are those used in the method to determine the holdup time.
Change any parameters that are different than those used in your method.
11 Enter the recorded retention time in the Holdup Time field. Move the cursor
to another parameter’s field and the calibrated column length appears.
12 Click OK to save the changes and exit the dialog.
13 Click OK on the Calibrate Columns dialog to save the calibration.
With capillary columns, such as those used with the MSD, linear velocity is
often measured rather than volumetric flow rate.
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