Apera Instruments SX751 pH/DO/ORP/EC/TDS/Salinity/Resistivity Multiparameter Portable Meter Kit (Waterproof, Data Logging, Autom. Temperature Compensation and Calibration)

Intelligent functions: Auto-calibration, auto temperature compensation (pH measurement), auto temperature & salinity compensation (oxygen measurement), memory for 400 data groups, auto power off, electrode recognition and more Uses digital filter technology to intelligently improve response time and accuracy of the meter. A smiley icon indicates a stable measurement. Equipped with Apera Instruments' 201T-S pH electrode, 2301T-S conductivity electrode (each with build-in temperature sensor), 301Pt-S ORP electrode and DO500 polarographic electrode (with temperature and salinity sensor). Built tough: IP57 water-resistant structure, ideal for use in harsh environment Supplied as a complete set in a sturdy case