7 CFR §52.3183b

1. (a)Count-sizes. Except for U.S. Grade A or U.S. Fancy, the count-sizes of dried prunes are not incorporated in the grades of dried prunes. The count-sizes of dried prunes in this subpart refer to the count (or number) of prunes per pound of dried prunes. The various sizes of dried prunes for the respective varietal types are commonly designated as follows, but may be designated by other numerical expressions:
   1. (1)Type I; Type IV. 30/40, 40/50, 50/60, 60/70, 70/80, 80/90, 90/100, 100/120, 120 and over.
   2. (2)Type II. 25/35, 35/45, 30/40, 40/50, 50/60, 60/70, 70/80, 80/90, 90/100.
   3. (3)Type III. 15/20, 18/24, 20/30, 30/40, 40/50, 50/60, 60/70.
2. (b)Recommended size nomenclature. The following size nomenclature is recommended for the respective “countsizes” of dried prunes: