51.1565—Internal defects.
Internal defects are defects which cannot be detected without cutting the potato. Some internal defects are listed in Table IV.
| Defects | Damagemaximum allowed | Serious damagemaximum allowed |
|---|---|---|
| Occurring outside of or not entirely confined to the vascular ring | ||
| Ingrown Sprouts, Internal Discoloration, Vascular Browning, Fusarium Wilt, Net Necrosis, Other Necrosis, Stem End Browning | 5 percent waste | 10 percent waste. |
| Internal Black Spot | When the spot(s) are darker than the official color chip (POT-CC-2) after removing 5 percent of the total weight of the potato | When the spot(s) are darker than the official color chip (POT-CC-2) after removing 10 percent of the total weight of the potato. |
| Occurring entirely within the vascular ring | ||
| Hollow Heart or Hollow Heart with Discoloration | Area affected not to exceed that of a circle 1/2 inch in diameter in a potato 21/2-inches in diameter or 6 ounces in weight. 1 | Area affected not to exceed that of a circle 3/4 inch in diameter in a potato 21/2-inches in diameter or 6 ounces in weight.1 |
| Light Brown Discoloration (Brown Center) | Area affected not to exceed that of a circle 1/2 inch in diameter in a potato 21/2 inches in diameter or 6 ounces in weight.1 | Area affected not to exceed that of a circle 3/4 inch in diameter in a potato 21/2 inches in diameter or 6 ounces in weight.1 |
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Code of Federal Regulations
444
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| Occurring entirely within the vascular ring | ||
| Internal Brown Spot and Similar Discoloration (Heat Necrosis) | Not more than the equivalent of 3 scattered spots 1/8 inch in diameter in a potato 21/2-inches in diameter or 6 ounces in weight.1 | Not more than the equivalent of 6 scattered spots 1/8 inch in diameter in a potato 21/2-inches in diameter or 6 ounces in weight.1 |
| 1Note: Correspondingly lesser or greater areas in smaller or larger potatoes. | ||