CFR > Title 7 - Agriculture > SUBTITLE B—Regulations of the Department of Agriculture > CHAPTER I—AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT OF AGRICULTURE (parts 27 to 206) > SUBCHAPTER C—REGULATIONS AND STANDARDS UNDER THE AGRICULTURAL MARKETING ACT OF 1946 (parts 51 to 75) > PART 51—FRESH FRUITS, VEGETABLES AND OTHER PRODUCTS 1,2 (INSPECTION, CERTIFICATION, AND STANDARDS) > SUBPART —United States Standards for Grades of Potatoes 1 (§51.1540 to §51.1566) > 51.1541—U.S. No. 1.

51.1541—U.S. No. 1.

“U.S. No. 1” consists of potatoes which meet the following requirements:
(a) Similar varietal characteristics;
(b) Firm;
(c) Fairly clean; 2

Code of Federal Regulations

Footnote(s): 2 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.