TOLERANCE TABLES TO BE USED IN CONNECTION WITH THE 
ENFORCEMENT OF THE FEDERAL SEED ACT 
(Seedsmen should remember that the tolerances are not for the purpose of permitting labeling to show higher quality than is 
actually found by test. The tolerances are provided to take care of the unavoidable variation in the results of tests and difficulty 
in bringing seed to uniform quality. It would be the part of wisdom to label the seed as indicated by test and certainly not to 
show higher quality than is indicated by test. There are numerous indications that seedsmen are applying the tolerance to the 
results of tests when labeling seed for shipment in interstate commerce. This is certain to lead to difficulty. The seedsman will 
need the protection of the tolerance if he labels the seed on the basis of the results of a test. If the tolerance is applied prior 
to labeling the seed, the seedsman in effect deprives himself of the protection of the tolerance.) 
TABLE OF TOLERANCE FOR PURE SEED VARIATIONS FOR OTHER THAN CERTAIN CHAFFY GRASSES 











Value % .00 10 .20 .30 40 50 60 -70 80 90 Value % 
100 60 100 
99 79 ed. AS 73 YA .69 .67 65 .63 61 99 
98 .99 97 95 93 91 89 87 85 83 81 98 
97 1.18 1.16 1.14 1.12 1.10 1.08 1.06 1.05 1.04 1.01 97 
96 1.36 1.34 1.33 1.31 1.29 LiZh 1:25 1.23 1.21 1.20 96 
95 1255 12 1.50 1.48 1.46 1.45 1.44 1.42 1.40 1.38 95 
94 1.72 1.71 1.69 1.67 1.65 1.63 1.62 1.60 1.58 1.56 94 
93 1.90 1.88 1.86 1.85 1.83 1.8] 179 1.78 1.76 1.74 93 
92 2.07 2.05 2.03 2.02 2.00 1.98 1.96 1.95 1.93 1.91 92 
91 2:23 2.22 2.20 2.18 ONG 2.15 Zale 2.12 2.10 2.08 91 
90 2.40 2.38 2.36 ZS) 239 2.31 2.30 2.28 2.27 225 90 
89 2.55 2.54 Zee Zo 2.49 2.47 2.46 2.44 2.43 2.41 89 
88 Zak 2.67 2.68 2.66 2.65 2.63 2.62 2.60 2.58 20 88 
87 2.86 2.84 2.83 2.81 2.80 2.78 2 fh 2./9 2.74 2.72 87 
86 3.00 2.99 207, 2.96 2.95 2:92 2.92 2.90 2.89 2.87 86 
85 S16) Sls 312 3.10 3.09 3.07 3.06 3.05 3.03 3.02 85 
84 3.28 3.27 3.26 3.24 3.23 3.21 3.20 3.19 De 3.16 84 
83 3.42 3.40 3.39 3.38 3.36 SOS 3.34 3.32 3.31 3.30 83 
82 3.59 3.53 Sho Jol 3.50 3.48 3.47 3.46 3.44 3.43 82 
81 3.67 3.66 3.65 3.64 3.62 3.61 3.60 sey) 3.57 3.56 81 
80 3.80 3.78 3.77 3.76 3.79 S73 3.72 6 Al 3.70 3.68 80 
79 3.91 3.90 3.89 3.88 3.87 3.85 3.84 3.83 3.82 3.81 79 
78 4.03 4.02 4.00 3.99 3.98 3.97 3.96 3.95 3.94 3.92 78 
77 4.14 4.13 4.12 4.10 4.09 4.08 4.07 4.06 4.05 4.04 TD 
76 4.24 4.23 4.22 4.21 4.20 4.19 4.18 4.17 4.16 4.15 76 
75 4.35 4.33 4.32 4.31 4.30 4.29 4.28 4.27 4.26 4.25 75 
74 4.44 4.43 4.42 4.41 4.40 4.39 4.38 4.37 4.36 4.35 74 
73 4.54 4.53 4.52 4.51 4.50 4.49 4.48 4.47 4.46 4.45 73 
72 4.63 4.62 4.61 4.60 4.59 4.58 4.57 4.56 4.56 4.55 72 
71 4.71 4.70 4.70 4.69 4.68 4.67 4.66 4.65 4.64 4.64 71 
70 4.80 4.79 4.78 4.77 4.76 4.75 4.75 4.74 4.73 4.72 70 
69 4.87 4.87 4.86 4.85 4.84 4.83 4.83 4.82 4.81 4.80 69 
68 4.95 4.94 4.93 4.93 4.92 4.9] 4.90 4.90 4.89 4.88 68 
67 5.02 5.01 5.00 5.00 4.99 4.98 4.98 4.97 4.96 4.95 67 
66 5.08 5.08 5.07 5.06 5.06 5.05 5.04 5.04 5.03 5.02 66 - 
65 Sela 5.14 5.13 5.13 5.12 Slt St 5.10 5.10 5.09 65 
64 5.20 5.20 5.19 5.19 5.18 s17 5.17 5.16 5.16 5.15 64 
63 5.26 5.25 Sie 5.24 5.24 o:2o 5.23 5:22 5.21 Al 63 
62 5.31 5.30 5.30 9.29 9.29 5.28 5.28 B27 Ewer 5.26 62 
61 De) 5.35 5.34 5.34 5.34 sh) es 5.32 5.32 5.31 61 
60 5.40 5.39 51D 5.38 5.38 5:37, 5.37 cay 5.36 5.36 60 
59 5.43 5.43 5.43 5.42 5.42 5.41 5.41 5.41 5.40 5.40 59 
58 5.47 5.46 5.46 5.46 5.45 5.45 5.45 5.44 5.44 5.44 58 
57 B00) 5.49 5.49 5.49 5.49 5.48 5.48 5.48 5.47 5.47 57 
56 D9, 2.52, S52 5.52 5.51 Sel 551 5.51 5.50 5.50 56 
55 50D 5.54 5.54 5.54 5.54 S198) 5.53 5.03 Dido 5.53 55 
54 5.56 5.56 5.56 5.56 5.56 5:59 Gao 5.55 5.55 SVo5 54 
53 5.58 5.58 5,57 5.57 5:57, ae07, B57 DL. S57) 5.56 53 
52 5.59 5.59 5.99 5.58 5.58 5.58 5.58 5.58 5.58 5.58 Ly. 
51 Shey) 5.09 5.59 5.99 5.90) 5.59 5.59 5.59 5.59 5.59 51 
50 5.60 5.59 5.59 5.59 5:59 5.59 5.59 5.59 5.59 5.59 50 
The tolerance for pure seed on purity less than 50% is the same as the tolerance for the larger part of the difference between | 
the purity and 100%. 4 
Example: If the purity test is 96.40% use the table in this manner: Find 96 in the “Value” column, then the .40 at top of table. - " i 
These two intersect at 1.29. Therefore the tolerance allowed would be 1.29%. i 
198 _ SEED TRADE — 

