Approximately 1 lb (454 g) of livestock feed or pet food.
Feed sample submitted should represent the entire lot of feed being tested. If a large bin of feed is to be sampled, use a feed probe and combine samples from various locations in the bin taken at various angles into one container; mix the container well and send about a pound of the mixed material for testing.
Leakproof plastic bag
Sample do not need to be shipped on ice. Double-bag, or bag plastic containers. When shipping multiple samples, pack the shipping box tightly enough to prevent movement of samples in transit to avoid breakage and mixing.