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Like the filaments in an incandescent light bulb, the ion source filaments will eventually
burn out. Certain practices will reduce the chance of early failure.
• When setting up data acquisition parameters, set the solvent delay so that the analyzer
will not turn on while the solvent peak is eluting.
• When the software prompts 'Override solvent delay at the beginning of a run' always
select 'No.'
• Higher emission current will reduce filament life.
• If you are controlling your MSD from the Edit Parameters screen, always select 'MS Off'
before changing any of the filament parameters.
It is very useful to switch from one filament to the other every three months so
that when filament fails, you know the other will fail soon. This will allow you
to change both filaments at the same time. Since the GC/MS system is
already vented, it's a good idea to replace other supplies in the flowpath at
the same time as the filaments.
Tips & Tools
MSD Filaments
MSD Filaments
Description 5975 Series 5973 Series 5972 Series 5971 Series
Filament assembly (EI) G2590-60053 G2590-60053 G2590-60053 05971-60140
Filament assembly (CI) G1099-80053 G1099-80053
Micro ion vacuum gauge G3170-80001
Triode gauge tube for measuring vacuum 0960-0897
E
I high temperature filament, G2590-60053
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