101
Agilent 5975 Series MSD
Operation Manual for MassHunter
Agilent Technologies
4
Operating in Chemical Ionization (CI)
Mode
General Guidelines 102
The CI GC/MSD Interface 103
To Operate the CI MSD 105
To Switch from the EI Source to the CI Source 106
To Pump Down the MSD in CI Mode 107
To Set Up the Software for CI Operation 108
To Operate the Reagent Gas Flow Control Module 110
To Set Up Methane Reagent Gas Flow 114
To Use Other Reagent Gases 117
To Switch from the CI Source to the EI Source 121
CI Autotune 122
To Perform a PCI Autotune (Methane Only) 124
To Perform an NCI Autotune (Methane Reagent Gas) 126
To Verify PCI Performance 128
To Verify NCI Performance 129
To Monitor CI Mode High Vacuum Pressure 130
This chapter provides information and instructions for operating the
5975 Series CI MSDs in Chemical Ionization (CI) mode. Most of the
information in the preceding chapter is also relevant.
Most of the material is related to methane chemical ionization but one section
discusses the use of other reagent gases.
The software contains instructions for setting the reagent gas flow and for
performing CI autotunes. Autotunes are provided for positive CI (PCI) with
methane reagent gas and for negative CI (NCI) with any reagent gas.
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