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  • No : 4705
  • Date of Issue : 2020/12/17 15:41
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(GCMS) Checking for Leaks

(GCMS) Checking for Leaks
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This section describes how to check the instrument for leaks. If an air leak is clearly present, locate the leak as described in "2. MS Vacuum Leak Check", and take corrective measures.
Operating an instrument with an air leak can cause a decrease in sensitivity, an increase in noise, filament burnout or other problems. Always check for leaks after performing maintenance.

GC leak will have different symptoms than an MS leak. Normally, carrier gas will leak from the system if there is a GC leak, while air will be drawn into the system when there is an MS leak. To check for GC leaks, refer to "1. GC Carrier Gas Leak Check". To check for MS leaks, refer to "2. MS Vacuum Leak Check" and "3. Vacuum Leak Check Using Peak Monitor".

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