USDA Agricultural Marketing Service (AMS)
USDA Rice Standards
The official USDA grading system for rough, brown, and milled rice sold in the United States.
View official standardAbout this standard
The United States Standards for Rice, maintained by the USDA Agricultural Marketing Service (7 CFR §§ 868.201-868.316), define the grading factors used to inspect and classify rough rice, brown rice for processing, and milled rice in US trade — including chalkiness, broken kernels, whiteness, and foreign material limits. Vibe workflows can measure some of the same visual characteristics — chalkiness, broken kernels, whiteness, and foreign material — for internal comparison and visual screening; this does not constitute an official USDA grade.
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