Triplett CL140 Total Residual Chlorine Detector Pen - Measures Free Chlorine, Chloramines, Hypochlorous Acid, and Hypochlorite Ion

["Comprehensive Total Chlorine Measurement – Accurately measures total residual chlorine, including free chlorine, chloramines, hypochlorous acid, and hypochlorite ion for reliable water quality monitoring in pools, drinking water, and treatment systems","Simultaneous Readings with Trend Display – Displays total chlorine (ppm) and temperature at the same time, with an analog bar graph for real time trend visualization and better process control","Accurate and Stable Sensor Technology – Features a flat surface electrode with automatic temperature compensation (ATC) and supports 1 or 2 point calibration","Smart Data Storage and Maintenance Alerts – Stores and recalls up to 25 numbered readings, with a Renew warning function that alerts when the electrode needs replacement","Rugged Waterproof Design – Built with IP57 waterproof protection and auto power off with disable option, chlorine electrode, sample cup, reagents for 50 tests, batteries, and neck strap"]