After A Hyprop Measurement - UMS HYPROP Operation Manual

Sample treatment for WP4 measurements

after a HYPROP measurement

Prepare four WP4 cups as well as the
related lids.
Push the soil sample – similar to a plunger
– in half inch steps out of the sample ring
and cut off the protruding soil piece. Let it
drop into an aluminum tray.
Fill the first WP4 cup with sample material
– maximum half of the cup. Close the cup
immediately.
Repeat these steps for cup 2, 3 and 4.
Seal the cups carefully with duck tape.
Dry the remaining soil from the tray in a
drying chamber. Take it out and let it cool
down in a desiccator. Weigh it.
Measure the samples in the WP4 device
according to its manual.
Weigh the wet samples immediately after
measuring in the WP4.
Put the WP4 samples into an oven and
let them dry several hours at 105 °C until
equilibrium is achieved. Take it out and let
it cool down in a desiccator. Weigh it.
91 | Addendum