General description Digital pH Meter is a professional tool designed for accurate and fast pH testing in various applications such as swimming pools, ponds, spas, laboratory testing, food processing, hydroponics, aquaculture, and home aquariums. This portable device features an easy-to-read large digital display and an auto calibration function, making it user-friendly and efficient. Technical specifications Measuring range: 0.0-14.0 pH Resolution: 0.1 pH Accuracy: ± 0.1 pH Automatic temperature compensation: -55°C ~ 0°C Power supply: 3 x 1.5V (AG-13 Coin cell type) Ambient temperature: 0~50°C Relative humidity: