To Verify Nci Performance - Agilent Technologies G7035A Operation Manual

4
Operating in Chemical Ionization (CI) Mode

To Verify NCI Performance

This procedure is for EI/PCI/NCI MSDs only.
Materials needed
• Octafluoronaphthalene (OFN), 100 fg/µL (5188-5347)
Always verify MSD performance in EI before switching to CI operation. See
CA UT IO N
System Performance"
going to run NCI.
Procedure
1
2
3
4
5
6
116
on page 71. Always set up the CI MSD in PCI first, even if you are
Verify that the MSD performs correctly in EI mode.
Load the NCICH4.U tune file, and accept the temperature setpoints.
Select Gas A and set flow to 40%.
In Tune and Vacuum Control view, run CI Autotune. See
NCI Autotune (Methane Reagent Gas)"
Note that there are no criteria for a "passing" Autotune in CI. If the
Autotune completes, it passes.
Run the NCI sensitivity method: OFN_NCI.M using 2 µL of 100 fg/µL OFN.
Verify that the system conforms to the published sensitivity specification.
Please see the Agilent Web site at
specifications.
on page 113.
www.agilent.com/chem
5977 Series MSD Operation Manual
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