CI Troubleshooting 3
81
Large peak at m/z 19
If the abundance of the peak at m/z 19 is more than half abundance of the
peak at m/z 17, there probably is too much water in the system.
The system was not baked out sufficiently after it was last vented.
Bake out the system as described in the Maintenance chapter of this manual.
Moisture left over in the reagent gas supply tubing and flow module
Purge the reagent gas supply lines for at least 60 minutes.
Contaminated reagent gas supply
Replace the reagent gas supply, and purge the lines and flow module.
Saturated methane/isobutane gas purifier
Replace the gas purifier.
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