raisins

Sizes of Seedless Raisins
Size	Definition
Select	No more than 60% by weight of all the raisins pass through round perforations 22/64 inch in diameter (8.7 millimeters), but not more than 10% by weight pass through 20/64 inch perforations.
Small or Midget	95% by weight of all the raisins pass through round perforations 9.5 millimeters in diameter (24/64 inch) and not less than 70% by weight of all the raisins will pass through round perforations 22/64 inch in diameter.
Mixed	No size requirement.

Grades of Natural Seedless,
including sun-dried, tunnel-dried, and golden Thomson Seedless
	A	B	C
	U. S. Grade¹
Maximum moisture,² by weight	18%	18%	18%
Maximum number of pieces of stem per 6 pounds	1	2	4
Maximum number of capstems per pound	15	25	35
Max % underdeveloped/substandard if Midget	2%	3%	5%
Max % underdeveloped/substandard if Select	1%	1.5%	2%
Max % underdeveloped/substandard if Mixed	1%	2%	3%

but max % damaged
but max % mold damaged
Max % sugared	5%	10%	15%
Grit, sand, silt	none	none	trace
Minimum % well-matured	80%	70%	70%

1. Another grade, Substandard, applies to seedless raisins that fail to meet the requirements of U. S. Grade C.

2. Except for the Monukka variety, for which the maximum moisture content for all grades is 19% by weight.

Grades of Muscats (seeded)
	U. S. Grade¹
	A	B	C
Maximum moisture	18%	18%	18%
Maximum number of pieces of stem per 2 pounds	1	2	3
Maximum number of seeds per pound	12	15	20
Maximum number of capstems per pound	10	15	20
Max % underdeveloped/substandard	2%	5%	8%

but max % damaged
but max % mold damaged
Max % sugared	5%	10%	15%
Grit, sand, silt	none	none	trace
Minimum % well-matured	80%	70%

1. Another grade, Substandard, applies to seedless raisins that fail to meet the requirements of U. S. Grade C.

Grades of Zante Currents
	U. S. Grade¹
	A	B
Maximum moisture	20%	20%
Maximum number of pieces of stem	1 in 1.5 lbs	1 in 1 lb.
Maximum number of seeds per pound	12	15
Max % by weight of currents with capstems (include a current for each loose capstem)	1.5%	2%
Minimum % well-matured or reasonably well-matured	75%
Max % underdeveloped/substandard	2%	5%
Max % discolored, damaged or moldy raisins	5%	7%
but max % damaged	2%	3%
but max % moldy	3%	4%
Max % sugared	5%	10%
Grit, sand, silt	none	none
Max % Substandard development and Undeveloped	2%	5%

1. Another grade, Substandard, applies to Zante currents that fail to meet the requirements of U. S. Grade B.

United States Dept. of Agriculture. Agricultural Marketing Service.
United States Standards for Grades of Processed Raisins. Effective date December 1, 1978.