Degas the Sample

 

If using the Smart VacPrep degasser, go to Smart VacPrep > Unit [n] > Start Degas, then degas the sample using menu commands and information entered on the Degas Conditions tab. The Smart VacPrep Operator Manual can be found on the Micromeritics web page (www.Micromeritics.com).

After the sample has been weighed, use a degassing unit to remove any contaminants which may have adsorbed to the surface or pores. Appropriate degassing units are available from Micromeritics.

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 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) to obtain the sample’s mass. Record this value as Mass of sample (After Degas).