To Switch From The Standard Or Inert Ei Ion Source To The Ci Ion Source - Agilent Technologies G7035A Operation Manual

4
Operating in Chemical Ionization (CI) Mode

To Switch from the Standard or Inert EI ion source to the CI Ion Source

Always verify MSD performance in EI before switching to CI operation.
CA UT IO N
Always set up the CI MSD in PCI first, even if you are going to run NCI.
Procedure
1
2
3
Electrostatic discharges to analyzer components are conducted to the side board
CA UT IO N
where they can damage sensitive components. Wear a grounded antistatic wrist strap.
See"Electrostatic discharge"
the analyzer chamber.
4
5
6
7
96
Vent the MSD. See "To Vent the MSD"
Open the analyzer. See
Remove the EI ion source. See
Install the CI ion source. See
Install the CI/Extractor interface tip seal (p/n G3870-20542). See
Install the CI/Extractor Interface Tip Seal"
Close the analyzer. See
Pump down the MSD. See
page 98.
on page 76.
"To Open the Analyzer Chamber"
"To Remove the EI Ion Source"
on page 123. Take antistatic precautions before you open
"To Install the CI Ion Source"
"To Close the Analyzer Chamber"
"To Pump Down the MSD in CI Mode"
5977 Series MSD Operation Manual
on page 78.
on page 128.
on page 167.
on page 155.
on page 80.
"To
on