| Grade | Minimum test weight per bushel (pounds) | Maximum limits of - | ||
|---|---|---|---|---|
| Damaged Sunflower Seed | Dehulled seed (percent) | |||
| Heat Damaged (percent) | Total (Percent) | |||
| U.S. No. 1 | 25.0 | 0.5 | 5.0 | 5.0 |
| U.S. No. 2 | 25.0 | 1.0 | 10.0 | 5.0 |
| U.S. Sample grade - | ||||
| U.S. Sample grade is sunflower seed that: | ||||
| (a) Does not meet the requirements for the grades U.S. Nos. 1 or 2; or | ||||
| (b) Contains 8 or more stones which have an aggregate weight in excess of 0.20 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), 10 or more rodent pellets, bird droppings, or equivalent quantity of other animal filth per 600 grams of sunflower seed; or | ||||
| (c) Has a musty, sour, or commercially objectionable foreign odor; or | ||||
| (d) Is heating or otherwise of distinctly low quality. | ||||