“U.S. Standard Sheller Run” consists of shelled almonds of similar varietal characteristics which are whole, clean and well dried, and which are free from decay, rancidity, insect injury, foreign material, doubles, split or broken kernels, particles and dust, and free from damage caused by chipped and scratched kernels, mold, gum, shriveling, brown spot or other means. (See §§ 51.2113 and 51.2114.)

In order to allow for variations incident to proper grading and handling, the following tolerances, by weight, shall be permitted:

(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. 25 percent;

(c) For kernels damaged by chipping and/or scratching or split and broken. 35 percent; Provided, that not more than three-sevenths of this amount, or 15 percent, shall be allowed for split and broken: And Provided Further, that not more than one-third of this latter amount, or 5 percent, shall be allowed for pieces which will pass through a round opening 20/64 inch (7.9 mm) in diameter;

(d) For foreign material. Two-tenths of 1 percent (0.20 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); and,

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