7 CFR § 51.1541 - U.S. No. 1.

---
identifier: "/us/cfr/t7/s51.1541"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "7 CFR § 51.1541 - U.S. No. 1."
title_number: 7
title_name: "Agriculture"
section_number: "51.1541"
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"
---


# 51.1541 U.S. No. 1.

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

(a) Similar varietal characteristics, except when designated as a mixed or specialty pack;

(b) Firm;

(c) Fairly clean; 
<sup>2</sup>
[^]

<sup>2</sup> Potatoes in containers bearing official State Seed Certification Tags and Seals are not required to be fairly clean but shall be free from damage by dirt.

(d) Fairly well shaped;

(e) Free from:

(1) Freezing;

(2) Blackheart;

(3) Late blight, southern bacterial wilt and ring rot; and,

(4) Soft rot and wet breakdown.

(f) Free from damage by any other cause. See §§ 51.1564 and 51.1565.

(g) Size. Not less than 1
7/8 inches in diameter, unless otherwise specified in connection with the grade.

(h) For tolerances see § 51.1546.

[35 FR 18258, Dec. 1, 1970, as amended at 76 FR 31789, June 2, 2011]