Grade designations for grain. The grade designations include in the following order:
The letters “U.S.”;
The abbreviation “No.” and the number of the grade or the words “Sample grade”;
When applicable, the subclass;
The class or kind of grain;
When applicable, the special grade(s) except in the case of bright, extra heavy, and heavy oats or plump rye, the special grades, “bright”, “extra heavy”, “heavy” and “plump” will precede the word “oats” or “rye” as applicable; and
When applicable, the word “dockage” together with the percentage thereof.
Optional grade designations. In addition to paragraph (a) of this Section, grain may be certificated under certain conditions as described in FGIS instructions when supported by official analysis, as “U.S. No. 2 or better (type of grain)”, “U.S. No. 3 or better (type of grain)”, and the like.