5-in-1 pH Tester: A compact device that measures pH, TDS, EC, salinity, and temperature. Thanks to its smart chip, it offers fast and stable measurements with automatic temperature compensation. Its intuitive interface allows you to switch between modes with one click, without changing probes. Simplified two-point calibration to ensure accuracy and durability. Ideal for aquariums, hydroponics, swimming pools, and hobby labs. Versatile and economical, it replaces five individual instruments while saving battery power and consumables. Blue Backlit LCD Screen: Featuring a high-contrast display, it guarantees clear readings at night or in bright sunlight, without annoying glare. No need for ambient light to get your results, whether outdoors or in the dark. High Accuracy 0.01 pH: Equipped with a laboratory-grade glass electrode and an intelligent algorithm, it ensures an accuracy of ± 0.01 pH to capture the slightest variations in acidity or alkalinity. Whether for scientific research,