7 C.F.R. § 51.1545
Size
(a) The minimum size, or minimum and maximum sizes may be specified in connection with the grade in terms of diameter or weight of the individual potato, or in accordance with one of the size designations in Table I or Table II: Provided, That sizes so specified shall not be in conflict with the basic size requirements for the grade.
(b) When size is designated as shown in Table II, the corresponding weight ranges shall apply. These size designations may be applied to potatoes packed in any size container: Provided, that the weight ranges are within the limits specified.
| Size designation | Minimum diameter 1 or weight | Maximum diameter 1 or weight | ||
|---|---|---|---|---|
| Inches | Ounces | Inches | Ounces | |
| Creamer | 3⁄4 | (3) | 15⁄8 | (3) |
| Chef | 23⁄4 | 8 | 41⁄2 | 28 |
| Size A2 | 17⁄8 | (3) | (3) | (3) |
| Size B | 11⁄2 | (3) | 21⁄4 | (3) |
| Small | 13⁄4 | (3) | 21⁄2 | 6 |
| Medium | 21⁄4 | 5 | 31⁄4 | 10 |
| Large | 3 | 10 | 41⁄2 | 28 |
| 1 Diameter means the greatest dimension at right angles to the longitudinal axis, without regard to the position of the stem end. | ||||
| 2 In addition to the minimum size specified, a lot of potatoes designated as Size A shall contain at least 40 percent of potatoes which are 21⁄2 inches in diameter or larger or 6 ounces in weight or larger. | ||||
| 3 No requirement. | ||||
| Size designation | Minimum weight | Maximum weight |
|---|---|---|
| Under 50 | 15 | |
| 50 | 12 | 19 |
| 60 | 10 | 16 |
| 70 | 9 | 15 |
| 80 | 8 | 13 |
| 90 | 7 | 12 |
| 100 | 6 | 10 |
| 110 | 5 | 9 |
| 120 | 4 | 8 |
| 130 | 4 | 8 |
| 140 | 4 | 8 |
| Over 140 | 4 | 8 |