Using Glass Beads And Filler Rods - Micromeritics Gemini VII 2390a Operator's Manual

Appendix E
4. Ensure that the filler rods are equidistant from the top of each tube. If they are not, add or remove
sample until they are the same distance from the top of the tube.
Packing of some powders may restrict gas access to the powder and cause slower
equilibration and/or lower results.
5. Attach the sample tube to the analysis port and the balance tube to the balance port.
6. Prepare your analysis Dewar and place it on the elevator.
7. Close the sample compartment door and start your analysis.
Be sure to select Measure for the free-space measurement.

Using Glass Beads and Filler Rods

This method may further improve results, depending on the sample material you are analyzing.
1. After determining and loading the amount of glass beads to use, insert a filler rod into the balance
tube.
2. Insert a filler rod into the sample tube. Ensure that the filler rods are equidistant from the top of
each tube. If they are not, add or remove sample until they are the same distance from the top of
the tube.
If you are using bulbous sample tubes, use the same size filler rod as used in the balance tube.
3. Attach the sample tube to the analysis port and the balance tube to the balance port.
4. Prepare your analysis Dewar and place it on the elevator.
5. Close the sample compartment door and start your analysis.
E-4
Gemini VII
239-42828-01 - Dec 2012