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Sample Submissions Instructions
1. Feeds and grains: One to five pounds in a sturdy plastic bag.
2. Fertilizers: One to five pounds in a sturdy plastic bag.
3. Soil amendments and composts: A minimum of one gallon of material sealed in a plastic bag, chilled, and shipped immediately. If sampled from a pile, take subsamples from five subsurface locations.
4. Liquid feeds or fertilizers: A minimum of a half pint in a tightly sealed plastic jar or bottle placed inside a plastic bag.
5. Whole cottonseed (aflatoxin screen): Five to ten pounds of dry material in a sturdy breathable bag. If using plastic, puncture a few small holes to permit airflow.
Please include the sample submission form or a letter indicating the sample identification, the tests you wish to have run, and contact and billing information.
All samples should be addressed to:
Idaho State Dept. of Agriculture
Feed and Fertilizer Lab
1180 Washington St N
Twin Falls, ID 83301