[Code of Federal Regulations]
[Title 7, Volume 7]
[Revised as of January 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 7CFR810.402]

[Page 608-609]
 
                          TITLE 7--AGRICULTURE
 
  CHAPTER VIII--GRAIN INSPECTION, PACKERS AND STOCKYARD ADMINISTRATION 
      (FEDERAL GRAIN INSPECTION SERVICE), DEPARTMENT OF AGRICULTURE
 
PART 810--OFFICIAL UNITED STATES STANDARDS FOR GRAIN--Table of Contents
 
               Subpart D--United States Standards for Corn
 
Sec. 810.402  Definition of other terms.

    (a) Broken corn. All matter that passes readily through a 12/64 
round-hole sieve and over a 6/64 round-hole sieve sample according to 
procedures prescribed in FGIS instructions.
    (b) Broken corn and foreign material. All matter that passes readily 
through a \12/64\ round-hole sieve and all matter other than corn that 
remains in the sieved after sieving according to procedures prescribed 
in FGIS instructions.
    (c) Classes. There are three classes for corn: Yellow corn, White 
corn, and Mixed corn.
    (1) Yellow corn. Corn that is yellow-kerneled and contains not more 
than 5.0 percent of corn of other colors. Yellow kernels of corn with a 
slight tinge of red are considered yellow corn.
    (2) White corn. Corn that is white-kerneled and contains not more 
than 2.0 percent of corn of other colors. White kernels of corn with a 
slight tinge of light straw or pink color are considered white corn.
    (3) Mixed corn. Corn that does not meet the color requirements for 
either of the classes Yellow corn or White corn and includes white-
capped Yellow corn.
    (d) Damaged kernels. Kernels and pieces of corn kernels that are 
badly ground-damaged, badly weather-damaged, diseased, frost-damaged, 
germ-damaged, heat-damaged, insect-bored, mold-damaged, sprout-damaged, 
or otherwise materially damaged.
    (e) Foreign material. All matter that passes readily through a 6/64 
round-hole sieve and all matter other than corn that remains on top of 
the 12/64

[[Page 609]]

round-hole sieve according to procedures prescribed in FGIS 
instructions.
    (f) Heat-damaged kernels. Kernels and pieces of corn kernels that 
are materially discolored and damaged by heat.
    (g) Sieves. (1) 12/64 round-hole sieve. A metal sieve 0.032 inch 
thick with round perforations 0.1875 (12/64) inch in diameter which are 
1/4 inch from center to center. The perforations of each row shall be 
staggered in relation to the adjacent row.
    (2) 6/64 round-hole sieve. A metal sieve 0.032 inch thick with round 
perforations 0.0937 (6/64) inch in diameter which are 5/32 inch from 
center to center. The perforations of each row shall be staggered in 
relation to the adjacent row.

[52 FR 24418, June 30, 1987, as amended at 52 FR 24437, June 30, 1987; 
52 FR 28534, July 31, 1987]

            Principles Governing the Application of Standards