Abstract: This study presents the results of applying the Six Sigma DMAIC (Define, Measure, Analyze, Improve and Control) process to improve the testing services of food and beverages. The study illustrates the application of several Six Sigma graphical and analytical tools to characterize and measure the service process, diagnose potential problems and deficiencies and identify improvement actions. An effective measurement system was utilized to collect empirical data for various operations of the testing service. The collected data is utilized to assess the current process capability and sigma level. Multiple tools were used in the “Analyze” stage of DMAIC to identify the root causes of the problems and to propose and verify a set of improvement plans. The study has reported tangible improvement to the efficiency and the quality of the food and beverages testing process.