Peak Widths Are Unstable - HP 5973 MSD Hardware Manual

Peak widths are unstable

Possible Cause
Wrong or corrupted tune file.
Action
Check the tune parameters.
Possible Cause The CI ion source is dirty.
Action
Clean the ion source. See the Maintenance chapter of this manual for more
information.
Possible Cause
Air leak.
Action Run Methane Pre-tune (in PCI). A visible peak at m/z 32 indicates air in the system.
Check for and correct any leaks. See the Leaks section at the beginning of this
chapter. After eliminating all air leaks, clean the ion source.
 Troubleshooting
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