89
Agilent 5977 Series MSD
Operation Manual
Agilent Technologies
4
Operating in Chemical Ionization (CI)
Mode
General Guidelines 90
The CI GC/MSD Interface 91
CI Autotune 93
N/A Not available 94
To Switch from the Standard or Inert EI ion source to the CI Ion Source 96
To Switch from the Extractor EI Ion Source to the CI Ion Source 97
To Pump Down the MSD in CI Mode 98
To Set Up the Software for CI Operation 99
To Operate the Reagent Gas Flow Control Module 101
To Set Up Methane Reagent Gas Flow 104
To Use Other Reagent Gases 106
To Switch from the CI Ion Source to the Standard or Inert EI Ion Source 109
To Switch from the CI Ion Source to the Extractor EI Ion Source 110
To Perform a PCI Autotune (Methane Only) 111
To Perform an NCI Autotune (Methane Reagent Gas) 113
To Verify PCI Performance 115
To Verify NCI Performance 116
To Monitor CI Mode High Vacuum Pressure 117
This chapter provides information and instructions for operating the
5977 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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