Grades and grade requirements for wheat

(a) Grades and grade requirements for all classes of wheat, except Mixed wheat.

Grades and Grade Requirements Grading factors Grades U.S. Nos. 1 2 3 4 5 Minimum pound limits of: Test weight per bushel: Hard Red Spring wheat or White Club wheat 58 57 55 53 50 All other classes and subclasses 60 58 56 54 51 Maximum percent limits of: Defects: Damaged kernels Heat (part of total) 0.2 0.2 0.5 1 3 Total 2 4 7 10 15 Foreign material 0.4 0.7 1.3 3 5 Shrunken and broken kernels 3 5 8 12 20 Total 1 3 5 8 12 20 Wheat of other classes: 2 Contrasting classes 1 2 3 10 10 Total 3 3 5 10 10 10 Stones 0.1 0.1 0.1 0.1 0.1 Maximum count limits of: Other material in one kilogram: Animal filth 1 1 1 1 1 Castor beans 1 1 1 1 1 Crotalaria seeds 2 2 2 2 2 Glass 0 0 0 0 0 Stones 3 3 3 3 3 Unknown foreign substances 3 3 3 3 3 Total 4 4 4 4 4 4 Insect-damaged kernels in 100 grams 31 31 31 31 31 U.S. Sample grade is Wheat that: (a) Does not meet the requirements for U.S. Nos. 1, 2, 3, 4, or 5; or (b) Has a musty, sour, or commercially objectionable foreign odor (except smut or garlic odor); or (c) Is heating or of distinctly low quality. 1 Includes damaged kernels (total), foreign material, shrunken and broken kernels. 2 Unclassed wheat of any grade may contain not more than 10.0 percent of wheat of other classes. 3 Includes contrasting classes. 4 Includes any combination of animal filth, castor beans, crotalaria seeds, glass, stones, or unknown foreign substance.

(b) Grades and grade requirements for Mixed wheat. Mixed wheat is graded according to the U.S. numerical and U.S. Sample grade requirements of the class of wheat that predominates in the mixture, except that the factor wheat of other classes is disregarded.

[52 FR 24418, June 30, 1987, as amended at 52 FR 24442, June 30, 1987; 57 FR 58966, Dec. 14, 1992; 71 FR 8235, Feb. 18, 2006]