Determining The Sample Mass - Micromeritics ASAP 2460 Operator's Manual

Preparing for Analysis
9. Remove the sample tubes and filler rods from the oven and allow to cool.
10. Blow out the sample tubes with oil-free compressed air.
11. Label the sample tube and stopper for identification.

Determining the Sample Mass

Analysis results are expressed in units of surface area per gram of sample; therefore, it is important the
true sample mass be known. The true mass is best calculated as:
• weigh the empty Sample Tube Set (sample tube and stopper, check seal or TranSeal) before degas
• weigh the Sample Tube Set with sample before degas and subtract from the weight of the empty
Sample Tube Set
• weigh the Sample Tube Set with sample after degas and subtract from the weight of the empty
Sample Tube Set
• weigh the Sample Tube Set with sample after analysis and subtract from the weight of the empty
Sample Tube Set
A
Sample Data Worksheet
dix A. Make copies as needed.
Use a copy of the Sample Data Worksheet to record the following:
1. Record the Sample Tube Identification.
2. Place the sample weighing support on the balance. Tare the balance and allow it to stabilize at
zero.
3. Place the sample tube set on the balance.
2-30
for recording the weights and calculating the mass is included in Appen-
ASAP 2460 Operator's Manual
246-42800-01 - Aug 2013