Discover the ultimate 4 - in - 1 Hydrogen Water Tester! This versatile device can simultaneously measure pH, ORP, H2, and temperature, with a wide measurement range. It features two test modes (ppb/ppm) for different user needs, and uses an upgraded electrode polymer reference for fast and accurate readings. The pH meter has a high - sensitivity glass probe, measuring from 0 to 14 pH with 0.01 pH resolution and is calibrated at 4.00, 6.86, and 9.18. The ORP and H2 meters come pre - calibrated. With dimensions of 9.21 x 5.31 x 1.97 inches, it's portable and easy to use. Simply submerge the probe into the water sample and press the relevant buttons to get results. Ideal for various applications such as testing drinking water, swimming pools, and in food processing, it ensures water safety and optimal taste, bringing convenience to your daily life and professional work. Color: Multicolor. Material: Plastic.