Golden Nematode Program Manual - Phytosanitary Resources

Procedures: Laboratory, Rack Room, and Wash Room
Sample Wash Room
Step 5: Wash the Mineral Soil Samples
The steps below are for washing mineral soil samples only.
Wash mineral soil samples as follows:
1. Turn the low water on so there will be a little water in the
Fenwick can. See the large tank on the right in Figure 2-4-8
below.
2. Open a soil sample bag; and slowly dump the soil into the
Fenwick can.
3. Throw the empty sample bag into the trash can.
4. Turn the water on high; this roils and stirs the soil.
Photos by Debi Briggs
FIGURE 2-4-8 Tank and Dumping Sample
5. Allow the high water to flow just up to the lip of the tank, then
turn the high water off; this brings the soil up and gets
everything to the top of the tank.
6. Keep the low water flowing all through the washing process.
7. As the debris comes up to the top of the tank, carefully hose and
skim the larger debris from the tank into the top sieve (No. 20).
See Figure 2-4-9.
11/2007-01 Golden Nematode Program Manual 2-4-15
PPQ