VacPrep 061 Sample Preparation
Feb 2013 2-21
Flowing Gas Preparation
1. Place the degasser power switch in the ON ( | ) position.
2. Set the temperature controller to the desired temperature.
3. Turn the VAC/GAS control knob on the desired degas station to the GAS position
4. Wipe the gas delivery tube with a clean cloth to remove any residue left from the previous
sample.
5. Remove the stopper from the sample tube and insert the gas delivery tube into the sample
tube.
Samples that contain a high level of moisture could benefit from a higher flow rate
than 5 psi regulator pressure when using the flowing gas method. A flow rate up to 50
cm3/min (approximately 16 psi regulator pressure) may be used to aid in purging
moisture form the sample when using the flowing gas preparation only.
Heat is delivered to all six heating stations; therefore, to prevent burns keep your
hands away from the interior of the heating stations.
Do not pierce the sample bed with the gas delivery tube. Doing so could clog the gas
delivery tube. To insert the tube, tilt the sample tube nearly horizontal and tap the tube
to open a passageway through the sample. Then tilt the sample tube back to a vertical
position and tap the tube to settle the sample bed around the gas delivery tube.
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