• Quickly identifies the 7 essential water parameters: pH, free chlorine, total alkalinity, bromine, total hardness, cyanuric acid, and total chlorine. • Simple three-step use: dip the strip for 2 seconds, wait 15 to 30 seconds, and compare the color with the scale on the container. • 150 test strips format suitable for maintenance throughout the swimming season. • Product suitable for water analysis in swimming pools, spas, and hot tubs. • Made with special paper and stable, non-fading color blocks to ensure clear readings and reliable results. • Packaging designed to protect the effectiveness of the strips by keeping the contents dry after each use.