Waters Xevo G2-XS QTof Overview And Maintenance Manual page 131

2. Slide the collar to the end of the tool.
Collar
3. Insert the collar in the sample cone.
To avoid damaging the sample cone, which is fragile, do
Notice:
not place it on its tip; always place it on its flanged base.
Cleaning the sampling cone assembly
April 2, 2015, 715004496 Rev. B 131