U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

All TitlesTitle 7Chapter IPart 51Subpart FF - Subpart FF—United States Standards for Grades of Onions (Other Than Bermuda-Granex-Grano and Creole Types)

GRADES
§ 51.2830 - U.S. No. 1.
§ 51.2831 - U.S. Export No. 1.
§ 51.2832 - U.S. Commercial.
§ 51.2833 - U.S. No. 1 Boilers.
§ 51.2834 - U.S. No. 1 Picklers.
§ 51.2835 - U.S. No. 2.

SIZE CLASSIFICATIONS
§ 51.2836 - Size classifications.

TOLERANCES
§ 51.2837 - Tolerances.

SAMPLES FOR GRADE AND SIZE DETERMINATION
§ 51.2838 - Samples for grade and size determination.

APPLICATION OF TOLERANCES
§ 51.2839 - Application of tolerances.

EXPORT PACKING REQUIREMENTS
§ 51.2840 - Export packing requirements.

DEFINITIONS
§ 51.2841 - Mature.
§ 51.2842 - Dormant.
§ 51.2843 - Fairly firm.
§ 51.2844 - Fairly well shaped.
§ 51.2845 - Wet sunscald.
§ 51.2846 - Doubles.
§ 51.2847 - Bottlenecks.
§ 51.2848 - Scallions.
§ 51.2849 - Damage.
§ 51.2850 - Diameter.
§ 51.2851 - Badly misshapen.
§ 51.2852 - Serious damage.
§ 51.2853 - One type.

METRIC CONVERSION TABLE
§ 51.2854 - Metric conversion table.
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