Waters Xevo TQD Operator's, Overview And Maintenance Manual page 125

16. Insert the combined 2.5-mm Allen wrench and cone extraction tool
through the hole in the ion block blanking plug, and then unscrew and
remove the ion block blanking plug and associated seal.
Combined 2.5-mm Allen wrench and cone extraction tool
Warning:
biohazardous and/or toxic materials. Dispose of it according
to local environmental regulations.
17. If the blanking plug seal shows signs of deterioration or damage, dispose
of it in accordance with local environmental regulations.
The blanking plug seal can be contaminated with
Cleaning the ion block assembly
Blanking plug
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