128 5975 Series MSD Operation Manual for MassHunter
4 Operating in Chemical Ionization (CI) Mode
To Verify PCI Performance
Materials needed
• Benzophenone, 100 pg/L (8500-5440)
Procedure
1 Verify that the MSD performs correctly in E1 mode.
2 Verify that the PCICH4.U tune file is loaded.
3 Select Gas A and set flow to 20%.
4 In Tune and Vacuum Control view, perform CI setup. See “CI Autotune” on
page 122.
5 Run CI Autotune. See “CI Autotune” on page 122.
6 Run the PCI sensitivity method BENZ_PCI.M using 1 µL of 100 pg/µL
benzophenone.
7 Verify that the system conforms to the published sensitivity specification.
Please see the Agilent Web site at www.agilent.com/chem for
specifications.
CAUTION
Always verify MSD performance in EI before switching to CI operation. See “To Verify
System Performance” on page 79. Always set up the CI MSD in PCI first, even if you are
going to run NCI.
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