Micromeritics GEMINI VII 2390 - Degas Samples

9. Replace the rubber stopper.
10. On the Sample Data Worksheet, record the following:
n Mass of the sample tube set with the sample.
n Subtract the Mass of empty sample tube set from the Mass of sample tube set plus
sample.
DEGAS SAMPLES
After the sample has been weighed, use a degassing unit to remove any contaminants which may
have adsorbed to the surface or pores of the sample. Appropriate degassing units are available
from Micromeritics.Parts and Accessories can be found on the Micromeritics web page
(www.Micromeritics.com).
If using the Smart VacPrep degasser, use the Smart VacPrep tab in the application to set degas
parameters. The Smart VacPrep Operator Manual can be found on the Micromeritics web page
(www.Micromeritics.com).
After degassing is complete, perform the following steps:
1. Weigh the sample tube set containing the sample. Record the mass on the Sample Data
Worksheet for Gas Adsorption on page10 - 3 as Mass of sample tube set plus sample
(After Degas).
2. Subtract the Mass of empty sample tube set (Before Degas) from the Mass of sample tube
set plus sample (After Degas). Record this value as Mass of sample (After Degas).
Degas Samples
Gemini VII 2390 Installation Instructions and Checklist
239-42870-02 Rev (B) — May 2021
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