Varian 4000 GCMS, Installation Procedures Manual

Page: 59 / 63

03-914998-55:6
59 of 63
8.3 Methodology
NOTE: The 4000 GCMS system will arrive with a Test Files CD containing
factory test method and data files. These method files can be used to pass the
sensitivity tests associated with the installation. Retain the test files CD for your
records.
Ensure the MS temperatures are set for this acquisition:
•
Trap: 150 °C
•
Manifold: 40 °C
•
Transfer Line: 230 °C
•
Source: 150 °C
In System Control, activate the external PCI method from the Test Files CD.
The appropriate MS damping gas flow rate is embedded in the name of the
corresponding data file found on the Test Files CD included with the system. The
Damping Gas flow rate can also be found in the Data File Information dialog in
the Module Attributes section. Set the MS damping gas flow rate to this value to
ensure optimal system performance. Refer to section 2.1 for help in
programming the MS damping gas flow rate.
8.4 BZP Acquisition
Use the Inject Single Sample option to make a 1 µL manual injection of test mix
03-920305-00. Use a lower air gap to avoid sample loss through the tip of the
needle. Inject slowly (1 µL/sec.) to avoid sample loss through explosive
vaporization. Ensure the split valve has changed from opened to closed before
injecting by striking the injector auto-start switch with the syringe barrel before
depressing the syringe plunger.