7 CFR § 51.1812 - U.S. No. 1.
“U.S. No. 1” consists of tangerines which meet the following requirements:
(a) Basic requirements:
(1) Discoloration: Not more than one-third of the surface, in the aggregate, may be affected by discoloration. (See § 51.1828.);
(2) Fairly well colored;
(3) Firm;
(4) Mature; and,
(5) Well formed.
(b) Free from:
(1) Decay;
(2) Unhealed skin breaks; and,
(3) Wormy fruit.
(c) Free from damage caused by:
(1) Ammoniation;
(2) Bruises;
(3) Buckskin;
(4) Caked melanose;
(5) Creasing;
(6) Dirt or other foreign material;
(7) Disease;
(8) Dryness or mushy condition;
(9) Green spots;
(10) Hail;
(11) Insects;
(12) Oil spots;
(13) Scab;
(14) Scale;
(15) Scars;
(16) Skin breakdown;
(17) Sprayburn;
(18) Sunburn; and
(19) Other means.
(d) For tolerances see § 51.1820.