One of the most important aspects of analytical work is the proper collection and preparation of representative samples. The following are some general guidelines on sampling techniques for soils, plants and water. Specific sampling information can be obtained from a variety of sources, including literature and Extension Specialists.
The Analytical Lab has the right to reject sample submissions for the following reason, but not limited to:
- Damaged sample containers
- Samples not stored appropriately during shipment (example: not on ice packs when needed)
- Inappropriate sample amounts (example, not enough material, or large sample amount without prior approval)
- If unusual matrices are accepted, additional charges may apply.
Materials that are not accepted:
- Hazardous materials
- Bio-hazardous materials such as, blood, human waste, human tissue, etc.
Also included are recommendations for preparing samples prior to submitting them to the UC Davis Analytical Lab. The lab routinely dries wet sample material and also provides sample grinding service (at client cost). If you have any questions regarding sampling or sample preparation, please contact the Lab at 530-752-0147.
References
Reisenauer, H. M. (ed.) 1978. Soil and Plant-Tissue Testing in California, Division of Agricultural Sciences, University of California, Bulletin 1879.