High-performance water quality meter■ pH Range: -2.000~20.000pH (±0.002pH)■ mV Range: -1999.9~1999.9mV (±0.2mV)■ Ion Concentration Range: 0.01~19999ppm, mg/L, mol/L■ Conductivity Range: 0.00~20.00mS/cm (Max.200mS,±0.5%F.S)■ TDS Range: 0~10ppt (Max. 20ppt, ±1% F.S)■ Salinity Range: 0~10ppt (Max. 80ppt, ±1% F.S)■ Resistivity: 0~100MΩ (±1% F.S)■ Dissolved Oxygen Range: 0.00~20.00mg/L (±0.2mg/L)■ % Saturation of Oxygen: 0~200% (±10%)■ Temperature Range: 0~105 oC (±0.5 oC)■ Up to 5 points push-button calibration, Auto-buffer recognition,Automatically freezes stable measured values, AutomaticTemperature Compensation, Selectable pH buffer standards (USA,NIST and DIN), ORP measurement modes, Temperature units (oCor oF), Solutions (0.001/0.01/0.1), Cell constant, Temperaturecoefficient, TDS factor, Normalization temperature (20 or 25 oC),Practical salinity (PSU) or Seawater measurement standard, Purewater or linear compensation mode and Stability conditions,Manual salinity and barometric pressure compensation, Automaticcalibration due reminder, Real-time help message, Reset function,Memory stores up to 500 readings, USB communication interface