7-in-1 pH Chlorine Meter for Swimming Pools, pH, Chlorine, Salinity, ORP, TDS, EC, and Temperature Tester, High-Precision Water Quality Tester with ATC Function for Swimming Pools, Drinking Water, Aqu

Comprehensive multi-parameter detection with a wide testing range: Effortlessly measure seven crucial water quality parameters, including pH (range: 0-14 pH), chlorine (range: 0.00-4.00 ppm), salinity (range: 0.01-25.00%; 0-9990 ppm; 10.01-200.0 ppt), ORP (range: ±999 mV), TDS (range: 0-9990 ppm and 10.01-200.0 ppt), EC (range: 0-9990μS/cm; 10.01-19.99 mS/cm; 20.1-200.0 mS/cm) and temperature all at once, providing a comprehensive analysis of your water source. Three display modes for salinity testing: PPM, PPT, and %. For pool salt testing: 0-9999 ppm; for seawater testing: 10-200 ppt (1 ppt = 1000 ppm; when the ppm reading exceeds 9999 ppm, the meter automatically switches to ppt). For food salt testing: 0.01-25%. Therefore, you don't need to calculate complex salt level values between different units, preventing calculation errors and making it easier to read the results. High quality: The pH meter is made of high-quality IP67 waterproof ABS, features a high-resolution LCD backlight, dual data display, and a replaceable probe and battery—all designed for high quality and long-term use. Portable and user-friendly: The compact and lightweight design allows for convenient transport and easy operation. Whether at home, in the lab, or outdoors, you can easily perform water quality tests. Effortless, long-lasting accuracy: the water quality pen has been calibrated by the manufacturer. The digital pH meter uses a 3-point automatic calibration method (pH 4.00, 7.00, and 10.01), allowing for easy calibration to ensure the accuracy of your measurements.