The following classifications are provided to describe the size of any lot: ``Halves'', ``Pieces and Halves'', ``Pieces'' or ``Small Pieces''. The size of portions of kernels in the lot shall conform to the requirements of the specified classification as defined below:
(a) Halves. Lot consists of 85 percent or more, by weight, half kernels, and the remainder three-fourths half kernels. (See Sec. 51.2285.)
(b) Pieces and halves. Lot consists of 20 percent or more, by weight, half kernels, and the remainder portions of kernels that cannot pass through a sieve with \24/64\ inch round openings. When a lot exceeds this minimum requirement, the actual percentage of halves may be specified. (See Sec. 51.2285.)
(c) Pieces. Lot consists of portions of kernels that cannot pass through a sieve with \24/64\ inch round openings. (See Sec. 51.2285.)
(d) Small pieces. Lot consists of portions of kernels that pass through a sieve with \24/64\ inch round openings, but that cannot pass through a sieve with \8/64\ inch round openings. When desired, the actual size ranges within such size ranges may be specified. (See Sec. 51.2285.)