Excerpt from the report Preface: The purpose of this bulletin is to present comprehensive information on one of the most important factors contributing to the improvement, identification, and maintenance of quality in the production and merchandising of eggs and egg products. In order to market eggs effectively to the greatest advantage to producers, consideration must be given to the consumer reaction on size, cleanliness of shells, and interior quality of shell eggs and the wholesomeness and functional quality of egg products. Producers do not have much incentive or adequate reward for producing and delivering clean, unbroken eggs of good interior quality unless their eggs are purchased by quality grade and weight class at proper price differentials.