Micromeritics VacPrep Operator's Manual page 53

20. Loosen the knurled retaining nut and slide the sample tube out of the vacuum fitting. Quickly
insert a stopper into the sample tube.
21. Place the vacuum fitting in a cooling station until the next sample is attached.
22. Reweigh the sample tube with stopper and sample to ensure that the correct sample mass
is recorded.
The weight recorded at this step may be compared to the weight recorded before
preparation to determine if adequate degassing has occurred.
VacPrep Operator Manual
061-42802-01 (Rev B) — Apr 2021
Alternating Vacuum Backfill Preparation
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