7 CFR § 51.2548
Average moisture content determination
July 6, 2020
(a) Determining average moisture content of the lot is not a requirement of the grades, except when nuts are specified as “very well dried.” It may be carried out upon request in connection with grade analysis or as a separate determination.
(b) Nuts shall be obtained from a randomly drawn composite sample. Official certification shall be based on the air-oven method or other officially approved methods or devices. Results obtained by methods or devices not officially approved may be reported and shall include a description of the method or device and the owner of any equipment used.
[68 FR 50685, Aug. 22, 2003]