7 CFR § 51.621 - U.S. No. 1.

---
identifier: "/us/cfr/t7/s51.621"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "7 CFR § 51.621 - U.S. No. 1."
title_number: 7
title_name: "Agriculture"
section_number: "51.621"
section_name: "U.S. No. 1."
chapter_name: "AGRICULTURAL MARKETING SERVICE (STANDARDS, INSPECTIONS, MARKETING PRACTICES), DEPARTMENT OF AGRICULTURE"
subchapter_number: "C"
subchapter_name: "REQUIREMENTS AND STANDARDS UNDER THE AGRICULTURAL MARKETING ACT OF 1946 AND THE EGG PRODUCTS INSPECTION ACT"
part_number: "51"
part_name: "FRESH FRUITS, VEGETABLES, AND OTHER PRODUCTS (INSPECTION, CERTIFICATION, AND STANDARDS)"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "7 U.S.C. 1621-1627."
cfr_part: "51"
---


# 51.621 U.S. No. 1.

“U.S. No. 1” consists of grapefruit which meet the following requirements:

(a) Basic requirements:

(1) Discoloration: Not more than one-half of the surface, in the aggregate, may be affected by discoloration. (See § 51.638.);

(2) Fairly smooth texture;

(3) Fairly well colored;

(4) Fairly well formed;

(5) Firm;

(6) Mature; and

(7) Similar varietal characteristics.

(b) Free from:

(1) Bruises;

(2) Caked melanose;

(3) Decay;

(4) Growth cracks;

(5) Sprayburn;

(6) Unhealed skin breaks; and

(7) Wormy fruit.

(c) Free from damage caused by:

(1) Ammoniation;

(2) Buckskin;

(3) Caked melanose;

(4) Dryness or mushy condition;

(5) Green spots;

(6) Hail;

(7) Oil spots;

(8) Scab;

(9) Scale;

(10) Scars;

(11) Skin breakdown;

(12) Sprayburn;

(13) Sprouting;

(14) Sunburn;

(15) Thorn scratches; and

(16) Other means.

(d) For tolerances see § 51.628.

[85 FR 68422, Oct. 29, 2020]