Accurate Hydrogen Water Measurement – This hydrogen water test pen offers two measurement modes (ppb and ppm) to suit individual preferences. Easily switch between modes with a short press of the MODE/CAL button. Equipped with an upgraded electrode polymer reference, it delivers fast and precise readings for dependable results. 4in1 Testing Capability – Designed to measure pH, ORP, H2, and temperature simultaneously, this tester provides a wide and comprehensive measurement range. It is ideal for evaluating water quality in drinking water, swimming pools, ponds, beer brewing, kombucha, aquariums, hydroponics, laboratories, and food processing applications, giving you all the critical data in one tool. Precision pH Measurement – Built with a sensitivity glass probe, the tester covers a complete pH range from 0 to 14 with a resolution of 0.01 pH. For enhanced accuracy, it features a precise threepoint calibration using pH solutions at 4.00, 6.86, and 9.18. ORP and H2 meters are precalibrated for convenience, ensuring accurate measurements right out of the box. Reliable Multifunction Performance – Combining pH, ORP, hydrogen concentration, and temperature measurement in one device, this versatile tester delivers consistently accurate data for water safety and taste. It is for monitoring filtered water, mineral water, coffee, juice, and other homemade beverages. Whether checking your home drinking water or crafting healthy drinks, this meter ensures quality every time. Key Benefits: Dual measurement modes (ppb and ppm) for user flexibility Measures four parameters at once: pH, ORP, hydrogen content, and temperature Wide application range for home, commercial, and laboratory use Threepoint pH calibration for accuracy Precalibrated ORP and H2 sensors for immediate operation Practical Applications: 1. Home use – Monitor and maintain quality drinking water for family health. 2. Brewing – Ensure water parameters for beer, kombucha, and specialty beverages. 3. Aquatics – Maintain safe and balanced water conditions for aquariums, ponds, and hydroponic systems. This hydrogen water tester combines multiple functions in a compact, easytouse design, making it a dependable choice for anyone who values accurate and comprehensive water quality testing.