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Gilson Company, Inc.
Step 7. Agitating the sample:
Without Pulverizing Balls: Hold the Aqua-Check vertically with the gauge facing down and agitate vigorously for
a.
5—10 seconds. Turn the Aqua-Check around, and with the gauge facing up agitate again for 5—10 seconds. Tap the
sides so that the sample falls into the chamber cap. This process should be repeated for 1—3 minutes, or until the
gauge reading in Step 8 has stabilized.
With Pulverizing Balls: Hold the Aqua-Check horizontally and use an orbital motion to spin the balls around
b.
inside the chamber, pulverizing the sample. Agitate for 20 seconds and rest for 20 seconds, repeating the process
at least three times. Periodically check the position of the gauge indicator. Continue the agitation cycle until the
indicator has stabilized. Some highly plastic clays may require 3 minutes or more of agitation.
Step 8. Read the pressure gauge at eye level while hold-
ing the vessel horizontally. Wait for the indicator
needle to stop moving. The gauge reads directly
in percent water content of wet weight. Accuracy
may be improved by establishing a correction
chart as shown in ASTM D 4944.
Step 8: Reading the pressure gauge at eye level
Step 10. Place the used sample/reagent mixture and residue in an open dry container and dispose of in accordance with
local regulations or Section 13 of the MSDS. Use the coarse bristle brush to clean the vessel and prepare for the
next test.
Step 7b: Using an orbital motion to spin the balls
around inside the chamber
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Gilson Aqua-Check Moisture Tester: MA-26X
Step 9. Taking great care that the black dot on the chamber
cap is facing away from your face and body, slowly
loosen the top screw to vent pressurized gas from
the vessel.
Step 9: Loosening top screw to vent pressurized gas
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