Portable Drying Unit (PDU)
Operating Instructions
- 2 -
Sample Preparation
1.
Label the sample slide with the sample ID. This can be achieved by writing the Sample ID on the
slide with an indelible marker, or by sticking a dymo label etc.
2.
Place the wet soil sample on the sample slide according to the picture and description below.
3.
For best results, each sample slide should represent one sample (5 sub-samples per sample).
4.
All soil types can be dried using the front side (wells).
Front - All soil types
Each well should be slightly overfilled, so that when tamped the soil protrudes a little above the sample
slide.
Back - Clay soil types
It is recommended that for clay soil types the back of the sample slide is used for faster drying times.
Ensure that a thin layer (smear) of the sample is applied and the sample is deep enough to cover the
spikes of the sample slide whilst ensuring the spikes are not visible. This can be achieved by using a
spatula as shown below.
Spreading soil on the back
of the sample slide using a
spatula
Portable Drying Unit
Operating Instructions
