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The Extech by FLIR ExStik 4-In-1 chlorine, pH, ORP and temperature kit is the perfect tool for measuring water quality in various environments. This versatile meter measures total chlorine, pH, ORP (redox), and temperature, providing valuable insights into water quality. The flat surface electrodes work on liquids, semi-solids, and solids, making it ideal for a wide range of applications. With its built-in memory, users can store and recall up to 15 readings, while the automatic electronic self-calibration function ensures accurate measurements every time. The large, easy-to-read 3-1/2 digit digital display, bargraph, and automatic temperature compensation make it simple to interpret results quickly. Applications include pool/spa water management, HVAC, food processing, healthcare, research and more. The ExStik provides reliable measurements for critical decisions regarding safety, productivity, and compliance.