Portable handy pH Meter measures the acidity and alkalinity of a substance. It is applicable for biological sample analysis in hydroponics, aquaculture, and agriculture. A very wise choice to test your swimming pool, measurement in laboratory or food analysis. Features: Data hold function With Temperature Compensation Protective cap Instant display Clear LCD with back-light function 2 points manual calibration Compact pen size CE RoHS Marking Specifications: Range: 0.00~14.00pH Resolution: 0.01pH Accuracy: ±0.05pH Temperature Compensation: 0~50°C Operating Temperature: 0~50°C Calibration: 2 points manual calibration by mini screwdriver Dimension: 157 x 27 x 8mm Weight: 42g Battery: 2 x 3V (CR1632) Set Includes: 1 x Digital pH Meter 2 x 3V CR2032 Battery 1 x Mini screwdriver / trimmer 2 x Calibration Powder (pH 4.01 and pH6.86) 1 x Plastic Case English Instruction Manual