7 CFR 810.1604: 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

Maximum count limits of:

Other materials:

Animal filth 9 9 9 9

Castor beans 1 1 1 1

Crotalaria seeds 2 2 2 2

Glass 0 0 0 0

Stones 1 3 3 3 3

Unknown foreign substance 3 3 3 3

Total 2 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 garlic odor); or

(c) Are heating or otherwise of distinctly low quality.

1 In addition to the maximum count limit, stones must exceed 0.1 percent of the sample weight.

2 Includes any combination of animal filth, castor beans, crotalaria seeds, glass, stones, and unknown foreign substances. The weight of stones is not applicable for total other material.