1LARGE SCREEN: The compact digital PH meter is designed with a large screen for clearer data display, the readings can be maintained. 2HIGH PRACTICABILITY: Equipped with spiral interface lengthened composite electrode, suitable for direct measurement in small diameter containers. 3ACCURATE AND FAST: The reading displays accurately and quickly, the digital PH tester has high accuracy and efficiency. 4WIDELY USE: Can be used in aquariums, aquaculture, fish hatcheries, food processing, laboratories, paper industry, swimming pools, schools and colleges. 5HIGH STRENGTH: The shell is made from high strength ABS plastic material, which is not easy to break or be damaged, ensures lasting durability. Item Type: Digital PH Meter Material: ABS Model: PH 98106 Battery: 3 x AG13 battery 1.5V (without battery) Use: Aquarium, aquaculture, fish hatchery, food processing, laboratory, paper industry, swimming pool, school and college Basic Parameters: PH: 0.00-14.00pH