###### Editorial Note on [Subchapter A of Chapter VIII](/current/title-7/chapter-VIII/subchapter-A)

#### Authority:

[7 U.S.C. 71-87K](https://www.govinfo.gov/link/uscode/7/71), [1621-1627](https://www.govinfo.gov/link/uscode/7/1621).

###### Editorial Note on [Subchapter A of Chapter VIII](/current/title-7/chapter-VIII/subchapter-A)

#### Editorial Note:

Nomenclature changes to subchapter A appear at [84 FR 45645](https://www.federalregister.gov/citation/84-FR-45645), Aug. 30, 2019.

#### § 868.310 Grades and grade requirements for the classes Long Grain Milled Rice, Medium Grain Milled Rice, Short Grain Milled Rice, and Mixed Milled Rice. (See also [§ 868.315](/on/2024-09-20/title-7/section-868.315).)

Grades, Grade Requirements, and Grade Designations

| Grade | Maximum limits of— | | | | | | | | | | | Color requirements1 | Minimum milling requirements5 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Seeds, heat damaged, and paddy kernels (singly or combined) | | Red rice and damaged kernels (singly or combined) (percent) | Chalky kernels1 2 | | Broken kernels | | | | Other types4 | |
| Total (number in 500 grams) | Heat damaged kernels and objectionable seeds (number in 500 grams) | In long grain rice (percent) | In medium or short grain rice (percent) | Total (percent) | Removed by a 5 plate3 (percent) | Removed by a 6 plate3 (percent) | Through a 6 sieve3 (percent) | Whole kernels (percent) | Whole and broken kernels (percent) |
| U.S. No. 1 | 2 | 1 | 0.5 | 1.0 | 2.0 | 4.0 | 0.04 | 0.1 | 0.1 | | 1.0 | White or creamy | Well Milled. |
| U.S. No. 2 | 4 | 2 | 1.5 | 2.0 | 4.0 | 7.0 | 0.06 | 0.2 | 0.2 | | 2.0 | Slightly gray | Well Milled. |
| U.S. No. 3 | 7 | 5 | 2.5 | 4.0 | 6.0 | 15.0 | 0.1 | 0.8 | 0.5 | | 3.0 | Light gray | Reasonably well milled. |
| U.S. No. 4 | 20 | 15 | 4.0 | 6.0 | 8.0 | 25.0 | 0.4 | 1.0 | 0.7 | | 5.0 | Gray or slightly rosy | Reasonably well milled. |
| U.S. No. 5 | 30 | 25 | 5 6.0 | 10.0 | 10.0 | 35.0 | 0.7 | 3.0 | 1.0 | 10.0 | | Dark gray or rosy | Reasonably well milled. |
| U.S. No. 6 | 75 | 75 | 6 15.0 | 15.0 | 15.0 | 50.0 | 1.0 | 4.0 | 2.0 | 10.0 | | Dark gray or rosy | Reasonably well milled. |
| U.S. Sample grade: | | | | | | | | | | | | | |
| U.S. Sample grade shall be milled rice of any of these classes which: (a) Does not meet the requirements for any of the grades from U.S. No. 1 to U.S. No. 6, inclusive; (b) contains more than 15.0 percent of moisture; (c) is musty or sour, or heating; (d) has any commercially objectionable foreign odor; (e) contains more than 0.1 percent of foreign material; (f) Contains two or more live or dead weevils or other insects, insect webbing, or insect refuse; (g) is otherwise of distinctly low quality. | | | | | | | | | | | | | |
| | | | | | | | | | | | | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 For the special grade Parboiled milled rice, see [§ 868.315(c)](/on/2024-09-20/title-7/section-868.315#p-868.315(c)). | | | | | | | | | | | | | |
| 2 For the special grade Glutinous milled rice, see [§ 868.315(e)](/on/2024-09-20/title-7/section-868.315#p-868.315(e)). | | | | | | | | | | | | | |
| 3 Plates should be used for southern production rice; and sieves should be used for western production rice, but any device or method which gives equivalent results may be used. | | | | | | | | | | | | | |
| 4 These limits do not apply to the class Mixed Milled Rice. | | | | | | | | | | | | | |
| 5 For the special grade Undermilled milled rice, see [§ 868.315(d)](/on/2024-09-20/title-7/section-868.315#p-868.315(d)). | | | | | | | | | | | | | |
| 6 Grade U.S. No. 6 shall contain not more than 6.0 percent of damaged kernels. | | | | | | | | | | | | | |

[[67 FR 61250](https://www.federalregister.gov/citation/67-FR-61250), Sept. 30, 2002, as amended at [70 FR 37255](https://www.federalregister.gov/citation/70-FR-37255), June 29, 2005]