---
kind: "section"
citation: "7 C.F.R. § 51.621"
title: "7"
number: "51.621"
heading: "U.S. No. 1."
url: "https://uscodex.org/cfr/7/51.621"
---

# §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](/cfr/7/51.638.md).);
  - (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](/cfr/7/51.628.md).

## Notes

### Amendments

[85 FR 68422, Oct. 29, 2020]

### Source

Source: 34 FR 13905, Aug. 30, 1969, unless otherwise noted. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981.

### Authority

Authority: 7 U.S.C. 1621-1627.

### Amendments

[85 FR 68422, Oct. 29, 2020]