Apera Instruments SX716 Portable Laboratory Oxygen Meter (Waterproof, Automatic Temperature, Salinity Compensation and Calibration)

Intelligent functions: auto calibration, automatic temperature and salinity compensation, 100 data storage groups, automatic shutdown Uses digital filter technology to intelligently improve the response speed and accuracy of the meter. The smiley symbol appears when the measurement is stable. The polarographic DO electrode (2 m cable) is equipped with built-in temperature and salinity sensors. Electrode polarisation takes only 3-5 minutes. Reliable Structure IP57 waterproof and dustproof, large transparent backlit LCD, powered by AA batteries. Comes as a complete kit