Portable Dissolved Oxygen Meter Extech DO700 ( 9-in-1 Meter with Lab Performance, Dissolved Oxygen concentration/ saturation, pH, mV, Conductivity, TDS, Salinity, Resistivity and Temperature)

9-in-1 Meter with Lab Performance Features: Measures Dissolved Oxygen concentration/ saturation, pH, mV, Conductivity, TDS, Salinity, Resistivity and Temperature Automatic salinity compensation and manual barometric pressure compensation for DO measurements One button pH calibration ( 4, 7, and 10pH) Choice of 3 point pH calibration for better accuracy One point Conductivity calibration - automatically recognizes 8 calibration solutions from USA, Europe and China series Automatic Temperature Compensation ( non-linear compensation for purified water < 10µ S/ cm to improve measuring accuracy) Memory stores up to 400 readings with series number, measured value and temperature Large blue backlit dual LCD display Auto power off saves battery life with disable function Waterproof housing Complete with DO probe, pH/ mV/ Temp electrode, polymer Conductivity cell, pH and Conductivity calbration solutions, batteries and hard carrying case http: / / www.extech.com/ instruments/ resources/ datasheets/ DO700data.pdf