Features Good Water PH Meter: For wide range of tests, the water quality tester can test the PH value of water to meet your various work needs. LCD Digital Display: The large screen will clearly display the test valve, while the digital display will greatly simplify your operation. Simpler Calibration: Supports for manual single point calibration, water quality meter ensures quick response and high test accuracy. Broader Application: Suitable for hydroponics, horticulture, swimming pools and spas, aquariums and coral pools, ionized water generators, etc. Convenient Carrying: The design of the water quality tester is light in weight, small in size, and very convenient to carry and use. Specification: Item Type: Water Quality Tester Material: ABS Measurement Range: 0.00~14.00PH Resolution: 0.01PH Accuracy: ± 0.1PH Temperature Compensation: 0℃~50℃ Battery: 1 x 9V6F22, shipped without battery.  Temperature: 0℃~50℃ Relative Humidity RH: < 85% Calibration Mode: Manual single point calibration.  Package List: 1 x Water Quality Tester 1 x Probe 1 x User Manual 1 x Screwdriver Package List 1 x Water Quality Tester 1 x Probe 1 x User Manual 1 x Screwdriver