Code of Federal Regulations Title 7. Agriculture § 7.810.206 Grades and grade requirements for barley

U.S. Sample Grade:

U.S. Sample grade shall be barley that:

^(a) Does not meet the requirements for the grades 1, 2, 3, 4, or 5;  or

^(b) Contains 8 or more stones or any number of stones which have an aggregate weight in excess of 0.2 percent of the sample weight, 2 or more pieces of glass, 3 or more crotalaria seeds (Crotalaria spp.), 2 or more caster beans (Ricinus communis L.), 4 or more particles of unknown foreign substance(s) or commonly recognized harmful or toxic substance(s), 8 or more cocklebur (Xanthium spp.) or similar seeds singly or in combination, 10 or more rodent pellets, bird droppings, or equivalent quantity of other animal filth per 1 1/8 to 1 1/4 quarts of barley;  or

^(c) Has a musty, sour, or commercially objectionable foreign odor (except smut or garlic odor);  or

^(d) Is heating or otherwise of distinctly low quality.

¹ Includes heat-damaged kernels. Injured-by-frost kernels and injured-by-mold kernels are not considered damaged kernels.