Maximum limits of
--------------------------------------
Minimum Damaged kernels
test weight -------------------------- Broken corn
Grade per bushel Heat and foreign
(pounds) damaged Total material
kernels (percent) (percent)
(percent)----------------------------------------------------------------------------------------------------------------U.S. No. 1.................................................. 56.0 0.1 3.0 2.0U.S. No. 2.................................................. 54.0 0.2 5.0 3.0U.S. No. 3.................................................. 52.0 0.5 7.0 4.0U.S. No. 4.................................................. 49.0 1.0 10.0 5.0U.S. No. 5.................................................. 46.0 3.0 15.0 7.0----------------------------------------------------------------------------------------------------------------U.S. Sample Grade
U.S. Sample grade is corn that:
(a) Does not meet the requirements for the grades U.S. Nos. 1, 2, 3, 4, or 5; or
(b) Contains stones with an aggregate weight in excess of 0.1 percent of the sample weight, 2 or more pieces of
glass, 3 or more crotalaria seeds (Crotalaria spp.), 2 or more castor beans (Ricinus communis L.), 4 or more
particles of an unknown foreign substance(s)or a commonly recognized harmful or toxic substance(s), 8 or more
cockleburs (Xanthium spp.), or similar seeds singly or in combination, or animal filth in excess of 0.20
percent in 1,000 grams; or
(c) Has a musty, sour, or commercially objectionable foreign odor; or
(d) Is heating or otherwise of distinctly low quality. [60 FR 61196, Nov. 29, 1995]
Special Grades and Special Grade Requirements