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Section 6. Achieving Internal CI
Specifications
The PCI specification for a 4000 GCMS system in Internal mode:
•
50:1 RMS signal-to-noise using the m/z 183 ion from a 1 µL injection of a
5 pg/µL BZP solution (03-931126-01). The required CI reagent is high
purity (> 99.95%) methanol.
6.1 Install Liquid CI
Before introducing methanol into the CI plumbing it may be necessary to
condition the CI plumbing to remove air and water by opening the CI solenoids in
Manual Control. Install the 4000 MS Liquid CI Option according to the
instructions included with the option. A picture of the installed liquid option is
shown in Figure 6.1. Note that the 4000 MS inlet port for the CI restrictor is
different from the inlet port on a 2000 MS.
Figure 6.1
Summary of Contents for 4000 GCMS
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