TriStar II 3020 Preparing for Analysis
302-42828-01 - Dec 2012 3-21
9. Weigh the sample tube set containing the sample and record the value on the Sample Data
Worksheet as [B] Sample tube set plus sample mass (Before Degas).
10. Subtract the [A] Mass for empty sample tube set from the [B] Mass of sample tube set plus sample
and record this value as the [C] Sample mass (Before Degas).
Degassing the Sample
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. Refer
to ORDERING INFORMATION, page 10-1.
If using the SmartPrep degasser, a menu displays on the program menu bar. Degas the sample using
menu commands and information entered in the Degas Conditions window. Refer to the SmartPrep
operator’s manual for operating instructions.
After degassing is complete, perform the following steps:
1. Weigh the sample tube set containing the sample and record the weight on the Sample Data
Worksheet as [B] Sample tube set plus sample mass (After Degas).
2. Subtract the [A] Mass for empty sample tube set (Before Degas) from the [B] Sample tube set plus
sample mass (After Degas) to obtain the sample’s mass. Record this value as [C] Sample mass
(After Degas).
Installing the Sample Tube
Repeat the following steps for each sample to be installed. Up to three sample tubes can be installed.
To install a sample tube to a port:
1. Remove the sample tube stopper.
2. If using a filler rod, hold the sample tube horizontally and carefully slide the filler rod into the
tube.
3. If using an isothermal jacket, slide the jacket down over the stem of the sample tube until it
touches the sample tube bulb.
Do not hold the rod vertically and drop the rod into the tube; this could break the rod
and/or the tube.
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