Numerical grading factors

All percentages are determined on weight basis except crushing tests to determine part of damage factor. GRADE North Dakota No. 1 North Dakota No. 2 North Dakota No. 3 North Dakota No. 4 North Dakota Sample Grade Minimum purity of subclass * 99.8% 99.5% 98.0% 95.0% 95.0% Heat damaged + 0.1% 0.2% 0.5% 1.0% ** Damage distinctly green seeds + 1.5% 1.5% 3.5% 3.5% ** Total damaged seeds + 1.5% 3.0% 5.0% 10.0% ** Foreign material other than dockage - Yellow: Cockle, wild mustard and rapeseed, singly or combined + 0.1% 0.2% 0.3% 0.7% ** Foreign material other than dockage - Brown or Oriental: Cockle, wild mustard and rapeseed, singly or combined + 0.1% 0.2% 0.7% 1.0% ** Other weed seeds + 0.3% 0.5% 0.7% 1.0% ** Other foreign material + 0.1% 0.3% 0.6% 1.0% ** Sclerotinia bodies + 0.1% 0.2% 0.3% 1.0% ** +All percentages are maximum tolerances. *Not applicable to North Dakota mixed mustard. **Sample grade shall be determined as that grade in which any one or more of the grading factors exceeds the maximum tolerances allowed for North Dakota No. 4, and samples having a musty, sour or objectionable odor. Mustard containing two or more rodent pellets, bird droppings, or an equivalent quantity of other animal filth or broken glass per one thousand grams cut from the sample as a whole shall be graded as North Dakota sample grade. Mustard containing two or more fertilizer pellets in the dockage free sample shall be graded North Dakota sample grade.