Analyzers and Collision Cell 7
Troubleshooting and Maintenance Manual 159
Post- and Pre-Filters
These four-electrode devices are located at the end of the front analyzer and
the beginning of the rear analyzer. They have three purposes:
• Support and align the collision cell between the two analyzers.
• Direct the selected ion stream into the collision cell.
• Direct the precursor ions and the product ions into the rear analyzer.
Figure 31 Post-filter
Post-filterCollision gas line
Collision cell removed for clarity
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