Below are grades and standards for both crops, the actual grades/standards allowed by some shipping companies can be more restrictive, eg. no white drupelets. Local markets rarely follow these standards (at least I have not seen them). If you would like more information, the original links can be found at:
https://www.ams.usda.gov/grades-standards/fresh-dewberries-and-blackberries-grades-and-standards
https://www.ams.usda.gov/grades-standards/raspberries-grades-and-standards
Fresh Dewberries and Blackberries Grades and Standards
Grades of Fresh Dewberries and Blackberries
- U.S. No. 1 consists of dewberries or blackberries of one variety which are firm, well colored, well developed and not overripe, which are free from caps (calyxes), mold and decay, and from damage caused by dirt or other foreign matter, shriveling, moisture, disease, insects, mechanical or other means.
a. Tolerances. In order to allow for variations incident to proper grading and handling, not more than 10 percent, by volume, of the berries in any lot may fail to meet the requirements of this grade, including therein not more than 5 percent for defects causing serious damage, and including in this latter amount not more than 1 percent for berries which are affected by mold or decay.
- U.S. No. 2 consists of dewberries or blackberries of one variety which fail to meet the requirements of the U.S. No. 1 grade but which do not contain more than 10 percent, by volume, of berries in any lot which are seriously damaged by any cause, including therein not more than 2 percent for berries which are affected by mold or decay.
- Unclassified consists of dewberries or blackberries which have not been classified in accordance with either of the foregoing grades. The term "unclassified" is not a grade within the meaning of these standards but is provided as a designation to show that no grade has been applied to the lot.
Detailed standards, Inspection Instructions & Other Resources:
Raspberries Grades and Standards
Grades of Raspberries
- U.S. No. 1 consists of raspberries of one variety which are well colored, well developed and not soft, overripe, or broken; which are free from cores, sunscald, mold, and decay, and from damage caused by dirt or other foreign matter, shriveling, moisture, disease, insects, mechanical or other means.
a. Tolerances. In order to allow for variations incident to proper grading and handling, not more than 10 percent, by volume, of the berries in any lot may fail to meet the requirements of this grade, including therein not more than 5 percent for defects causing serious damage, and including in this latter amount not more than 1 percent for berries which are affected by mold or decay.
- U.S. No. 2 consists of raspberries of one variety which fail to meet the requirements of the U.S. No. 1 grade but which do not contain more than 10 percent, by volume, of berries in any lot which are seriously damaged by any cause, including therein not more than 2 percent for berries which are affected by mold or decay.
- Unclassified consists of raspberries which have not been classified in accordance with either of the foregoing grades. The term "unclassified'' is not a grade within the meaning of these standards but is provided as a designation to show that no grade has been applied to the lot.
