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United States Standards

for Grades of

American (Eastern Type)

Bunch Grapes for Processing

and Freezing

Effective July 5, 1943

(Reprinted - January 1997)
 Compliance with the provisions of these standards shall not excuse failure to comply with the provisions of the 1

Federal Food, Drug and Cosmetic Act, or with applicable State laws and regulations.

1

United States Standards for Grades of American (Eastern Type) Bunch

Grapes for Processing and Freezing 1

Grades 

51.4400 U.S. No. 1. 

51.4401 U.S. No. 2. 

Unclassified 

51.4402 Unclassified. 

Definitions 

51.4403 Mature. 

51.4404 Well colored. 

51.4405 Serious damage. 

51.4406 Fairly well colored. 

Grades 

§51.4400 U.S. No. 1. 

"U.S. No. 1" consists of grapes of one variety which are well colored, mature, not crushed, dried,

or soft; which are free from mold, decay, berry moth injury, and from serious damage caused by

russeting, hail, freezing, mildew, other disease, insects, or other means. 

(a) Tolerances. In order to allow for variations incident to proper grading and handling, not more

than a total of 15 percent, by weight, of the berries in any lot may fail to meet the requirements of

this grade, including therein not more than 6 percent for berries which are seriously damaged:

Provided, That included in this latter amount there shall be allowed not more than 3 percent for

berries which are affected by mold or decay, and not more than 2 percent for dried berries or

berries which are affected by berry moth. 

§51.4401 U.S. No. 2. 

"U.S. No. 2" consists of grapes which meet the requirements and tolerances of U.S. No. 1 grade

except that the grapes need be only fairly well colored and except that not more than 3 percent

shall be allowed for dried berries or those affected by berry moth. 

Unclassified 

§51.4402 Unclassified. 

"Unclassified" consists of grapes which have not been classified in accordance with any 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. 

Definitions 

§51.4403 Mature. 

"Mature" means that the grapes are juicy, palatable, and have reached the stage of development at

which the skin of the berry easily separates from the pulp. Frozen or slightly frosted stock should
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not be confused with mature stock. 

§51.4404 Well colored. 

"Well colored" means that not less than 90 percent, by weight, of the berries show full color

characteristic of the variety. Ten percent may show partially or poorly colored berries which are

not characteristic of immature berries. 

§51.4405 Serious damage. 

"Serious damage" means any defect, or any combination of defects, which seriously detracts from

the processing or freezing quality of the grapes. 

§51.4406 Fairly well colored. 

"Fairly well colored" means that not less than 75 percent, by weight, of the berries show full color

characteristic of the variety. Twenty-five percent may show partially or poorly colored berries

which are not characteristic of immature berries.