Code of Federal Regulations Title 7. Agriculture § 7.51.2108 U.S. Select Sheller Run

(a) For dissimilar varieties. 5 percent, including not more than one-fifth of this amount, or 1 percent, for bitter almonds mixed with sweet almonds;

(b) For doubles. 15 percent;

(c) For kernels damaged by chipping and/or scratching. 20 percent;

(d) For foreign material. One-tenth of 1 percent (0.10 percent). No part of this percentage shall be allowed for glass and metal;

(e) For particles and dust. One-tenth of 1 percent (0.10 percent);

(f) For split and broken kernels. 5 percent:  Provided, that not more than two-fifths of this amount, or 2 percent, shall be allowed for pieces which will pass through a round opening 20/64 inch (7.9 mm) in diameter;  and,

(g) For other defects. 3 percent, including not more than two-thirds of this amount, or 2 percent, for serious damage.