010-15 Wyo. Code R. § 15-19
(a) The grades provided below are applicable to edible shell eggs in "lot" quantities rather than on an "individual" egg basis. Reference in these standards to the term "case" means thirty (30) dozen eggs per case as used in commercial practices in the United States. A minimum of one hundred (100) eggs must be examined per sample case. For lots which consist of less than one (1) case, a minimum of fifty (50) eggs must be examined. If the lot consists of less than fifty (50) eggs, all eggs will be examined. Whenever grading service is performed on a representative sample basis, the sample shall be drawn and consist of not less than the minimum number of cases as indicated in the following table:
MINIMUM NUMBER OF CASES, RANDOMLY SELECTED, COMPRISING A REPRESENTATIVE SAMPLE
Cases in Lot Cases in Sample
1.................................................................................................................. 1
2 to 10 inclusive........................... 2
11 to 25 .............................. 3
26 to 50 ............................... 4
51 to 100.............................. 5
101 to 200........................... 8
201 to 300........................... 11
301 to 400........................... 13
401 to 500........................... 14
501 to 600........................... 16
(Include one (1) additional case for each fifty (50) cases or fraction thereof in excess of six hundred (600) cases.)
(b) Aggregate tolerances are permitted within each grade only as an allowance for variable efficiency and interpretation of graders, normal changes under favorable conditions during reasonable periods between grading, and reasonable variations of grader's interpretation.
(c) Substitution of higher qualities for lower qualities specified is permitted.
(d) "No grade" means eggs of possible edible quality that fail to meet the requirements of an official Wyoming grade or that have been contaminated by smoke, chemicals, or other foreign material which has seriously affected the character, appearance, or flavor of the eggs.
010-15 Wyo. Code R. § 15-19