QUALITY-CONTROL CHARTS FOR STORAGE OF EGGS

Modified Shewhart charts were constructed with weight loss, Haugh unit s and yolk index for storage of untreated, soda lime, water glass or o il coated and thermostabilized eggs. The data obtained showed differen ces between the treatments, and control charts derived therefrom illus trate maintenance within limits of the inevitable quality loss which a ccompanies storage of eggs. Knowledge of the trends make it possible t o readjust the storage conditions to prolong the period before violati on of acceptable limits comes into play.