Tolerances for rates of occurrence of noxious-weed seeds shall be recognized and shall be applied to the number of noxious-weed seeds found by analysis in the quantity of seed specified for noxious-weed seed determinations in §201.46, except as provided in §201.16(b). Rates per pound or ounce must be converted to the equivalent number of seeds found in §201.46, Table 1, Minimum weight for noxious-weed seed examination (grams). Some tolerances are listed in the following table. The number found as represented by the label or test (Column X) will be considered within tolerance if not more than the corresponding numbers in Column Y are found by analysis in the administration of the Act. For numbers of seed greater than those in the table, a tolerance based on a degree of certainty of 5 percent (P = 0.05) can be calculated by the formula, Y = X + 1.65√X + 0.03, where X is the number of seeds represented by the label or test and Y is the maximum number within tolerance.

Open Table
Number represented by label or test Maximum number within tolerances Number represented by label or test Maximum number within tolerances Number represented by label or test Maximum number within tolerances
(X) (Y) (X) (Y) (X) (Y)
0 2 34 43 68 81
1 2 35 44 69 82
2 4 36 45 70 83
3 5 37 46 71 84
4 7 38 47 72 85
5 8 39 49 73 86
6 9 40 50 74 87
7 11 41 51 75 89
8 12 42 52 76 90
9 13 43 53 77 91
10 14 44 54 78 92
11 16 45 55 79 93
12 17 46 56 80 94
13 18 47 58 81 95
14 19 48 59 82 96
15 21 49 60 83 97
16 22 50 61 84 98
17 23 51 62 85 99
18 24 52 63 86 101
19 25 53 64 87 102
20 27 54 65 88 103
21 28 55 67 89 104
22 29 56 68 90 105
23 30 57 69 91 106
24 31 58 70 92 107
25 32 59 71 93 108
26 34 60 72 94 109
27 35 61 73 95 110
28 36 62 74 96 111
29 37 63 75 97 112
30 38 64 76 98 114
31 39 65 78 99 115
32 41 66 79 100 116
33 42 67 80

[76 FR 31794, June 2, 2011]


Tried the LawStack mobile app?

Join thousands and try LawStack mobile for FREE today.

  • Carry the law offline, wherever you go.
  • Download CFR, USC, rules, and state law to your mobile device.