The Taylor K-2006 FAS-DPD Complete is a comprehensive water testing kit designed for swimming pools and spas. It allows users to accurately measure chlorine levels (both free and combined), pH, alkalinity, calcium hardness, and cyanuric acid levels. This kit includes 0.75 oz bottles of testing reagents and a graduated cylinder for easy measurement. It's suitable for both residential and commercial pool maintenance, ensuring optimal water quality. The kit also comes with a waterproof guide for quick reference, making it user-friendly for pool owners.