Features: 1Multiple functions with PH meter conductivity temperature function data retention function automatic temperature compensation function and other functions. 2It is suitable for pH and conductivity testing in chemical metallurgy environmental protection pharmaceutical biochemical food and tap water solutions. 3Small and compact easy to carry easy to operate strong in practicability convenient and quick to replace the electrodes and reduce the cost of use. 4The shell is made of highquality plastic wearresistant and durable not easy to damage and has a long service life. 5The higher the electrical conductivity the more impurities in the water quality which is not pure enough. Specification: Condition: 100% Brand NewItem Type: PH MeterMaterial: Plastic + ElectronicsWeight: Approx. 220g/7.8oz Product Size: Approx. 18 x 3.5 x 3.5cm/7.1 x 1.4 x 1.4inBattery Parameters: Built-In 4 x LR44 Button BatteriesBattery Type: Button BatteryBattery Model: LR44Nominal Battery Capacity: 160 mAhMeasurement Range: 0-1999 S/cm; 0-14pHResolution: 1 S/cm; 0.1 pHFeatures: Data Retention Low Power Prompt Conversion Between and Automatic ShutdownTemperature measurement: 0-50Calibration Function: 3 Points (PH) 1 Point (Conductivity)Functions: PH Meter Conductivity Temperature Function Data Holding Function Automatic Temperature Compensation FunctionScope of Application: Chemical Metallurgy Environmental Protection Pharmaceutical Biochemical Food and Tap Water Solutions Package List: 1 x Water Quality Test Pen1 x Chinese and English Instruction Note: 1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Please soak in clean water for 5‑10 minutes to activate the electrode before use.