Abstract
Accuracy and Precision are two key test parameters for the traditional aerobic plate count test and the traditional yeast & mold plate count test. During a training program that was implemented for a newly launched cosmetic testing microbiology laboratory, data was collected for test area microbiologists. The American Type Culture Collection microorganisms were utilized to spike three different cosmetic categories (baby sunscreen lotion, biotin collagen shampoo and body wash). Positive control data was also collected and compared to determine test accuracy and test precision.