Digital Residual Chlorine Tester Pen, High Precision Water Quality Meter with ATC & Backlit LCD, Portable Free Measurement Tool for Swimming Pools, Drinking Tap and Wastewater

Versatile & Comprehensive Testing: Accurately measures total residual chlorine in aqueous solutions, including free chlorine (CI2), hypochlorite (OCI-), and chloramine T. Ideal for monitoring water quality in drinking water, cooling towers, and industrial or domestic wastewater. HD LCD Dual Display with Backlight: Equipped with a high-contrast LCD screen that simultaneously displays chlorine (CL) levels and temperature. The built-in backlight ensures clear and easy-to-read results, making night-time or low-light reading a breeze. Automatic Temperature Compensation (ATC): Features advanced ATC technology for precise readings regardless of water temperature variations. Easily switch between °C and °F (0.0-60.0°C / 32.0-140.0°F) to suit your preference. The built-in temperature sensor reacts faster and more accurately than direct contact measurement. Replaceable High-Sensitivity Probe: Designed with a premium, high-sensitivity electrode for instant and highly reliable measurements. The convenient plug-in probe is fully detachable, allowing for easy replacement to extend the lifespan of your tester. Pocket-Sized & Ready to Go:Made of resistant white ABS material, this compact digital pool water tester easily fits in your pocket. Perfect for on-the-go outdoor use, testing home tap water, alkaline water, or effectively managing swimming pool water quality anytime, anywhere.