CFR›Title 7›Subtitle B›Chapter I›Part 51›Subpart Q ContainsSubject groups Application of Tolerances–SizeCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart Q—United States Consumer Standards for Potatoes Subject Groups Application of Tolerances Application of Tolerances Section 51.1579 Definitions Definitions Sections 51.1580–51.1587 Grades Grades Sections 51.1575–51.1576 Off-Grade Off-Grade Section 51.1578 Size Size Section 51.1577 Source18 FR 7132, Nov. 11, 1953, unless otherwise noted. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981. Previous P Subpart P—United States Standards for Grades of Potatoes Next R Subpart R—United States Standards for Grades of Florida Tangerines