Installation manual

122 5975 Series MSD Operation Manual
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 page 116.
5 Run CI Autotune. See page 116.
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 page 76.
Always set up the CI MSD in PCI first, even if you are going to run NCI.