Grades and grade requirements for corn.

  1. Law
  2. CFR 7
  3. Agriculture
  4. Regulations of the Department of Agriculture
  5. Agricultural Marketing Service (Federal Grain Inspection Service, Fair Trade Practices Program), Department of Agriculture
  6. Federal Grain Inspection
  7. Official United States Standards for Grain
  8. United States Standards for Corn
  9. Grades and Grade Requirements
  10. Grades and grade requirements for corn.

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§ 810.404 Grades and grade requirements for corn.

Expand Table
Grade Minimum test weight per bushel (pounds) Maximum limits of
Damaged kernels Broken corn and foreign material (percent)
Heat damaged kernels (percent) Total (percent)
U.S. No. 1 56.0 0.1 3.0 2.0
U.S. No. 2 54.0 0.2 5.0 3.0
U.S. No. 3 52.0 0.5 7.0 4.0
U.S. No. 4 49.0 1.0 10.0 5.0
U.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]


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