This 5-in-1 digital pool water tester is a must-have for anyone maintaining saltwater pools, hot tubs, aquariums, or hydroponic systems. It accurately reads pH, salinity (ppm/ppt), TDS, EC, and water temperature within seconds—no messy test strips needed. Featuring a high-precision glass probe with 12.88 mS/cm calibration, it automatically adjusts for temperature variations, ensuring reliable results across 32–140 °F. The clear LCD backlit display shows dual readings and is perfect for any lighting condition. Rugged and compact with protective cap, it's suitable for home, travel, pool service, and field use. Get all essential water quality metrics in handheld device—quick, accurate, and easy.

All‑in‑5‑Parameter Water Quality Monitor：device measures pH, salinity (ppm/ppt), TDS, EC, and temperature simultaneously. Ideal for saltwater pools, hot tubs, spas, koi ponds, hydroponics, drinking water and aquarium testing.
Precision Calibration with 12.88 mS/cm Solution：Upgraded glass probe and high-accuracy chip ensure reliable salinity and EC readings. Includes calibration solution for instant accuracy. Auto-temperature compensation (0–60 °C) delivers consistent results every time.
Dual Salinity Scale for Versatile Use：Switches automatically between ppm (0–9990 ppm) and ppt (up to 100 ppt) for saltwater pools, seawater, fish tanks, and hydroponic systems—perfect for all your water management needs.
Fast & Clear LCD Backlit Display：Simultaneous display of pH + sal/EC/TDS + temperature on a large, easy-read screen. Backlight ensures clarity at dusk or dim lighting without color charts or guesswork.
Durable & Portable for Field Use：Rugged ABS housing, protective cap, and compact design make it easy to carry to poolside or aquarium. Perfect for daily monitoring, water balancing, & wellness routines, and travel.