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PH-9082 Waterproof Pen-Type High Precision pH/Temperature Meter Technical Parameters Testing Items Measuring Range Resolution Accuracy/Compensation pH Value 0.00~14.00pH 0.01pH ±0.02pH Temperature 0~50°C 0.1°C ±1°C; Automatic Compensation (0~50°C) Other Parameters Calibration Method: Automatic 2-Point Calibration Battery: 3 × 1.5V (AAA) Operating Temperature: 0~50°C Dimensions: 250×48×36mm Weight: 142g