§ Grades and grade requirements for soybeans. Grading factors Grades U.S. Nos. 1 2 3 4 Maximum percent limits of: Damaged kernels: Heat (part of total) 0.2 0.5 1.0 3.0 Total 2.0 3.0 5.0 8.0 Foreign material 1.0 2.0 3.0 5.0 Splits 10.0 20.0 30.0 40.0 Soybeans of other colors: 1 1.0 2.0 5.0 10.0 Maximum count limits of: Other material: Animal filth 9 9 9 9 Caster beans 1 1 1 1 Crotalaria seeds 2 2 2 2 Glass 0 0 0 0 Stones 2 3 3 3 3 Unknown foreign substance 3 3 3 3 Total 3 10 10 10 10 U.S. Sample grade are Soybeans that: (a) Do not meet the requirements for U.S. Nos. 1, 2, 3, or 4; or (b) Have a musty, sour, or commercially objectionable foreign odor (except smut or garlic odor); or (c) Are heating or of distinctly low quality. 1 Disregard for Mixed soybeans. 2 In addition to the maximum count limit, stones must exceed 0.1 percent of the sample weight. 3 Includes any combination of animal filth, castor beans, crotalaria seeds, glass, stones, and unknown substances. The weight of stones is not applicable for total other material. [71 FR 52406, Sept. 6, 2006]