This paper discusses the importance of specifications in defining product quality. Viscosity, which is a major property of paint, is critical to painters; therefore, it is essential that the manufacturing company knows how to control it in such a way that there is no need for additional investments or extra time spent in production. The key to a defect-free product is knowing the process capability (machine, process, raw materials, etc.), data gathering, and the application of Six Sigma.

Keywords : Paint; Coatings; Viscosity; Manufacturing; Six Sigma; Acrylic; Latex; Process Capabiliy (CPK).