Product Features Economical, user-friendly and accurate, the Eutech DO 700 is your ideal choice for routine applications in laboratories, productions plants and schools. :: Dissolved Oxygen measurements in ppm, mg/L or % saturation :: Accurate readings in varying conditions with Temperature, Salinity and Barometric Pressure Compensation :: Large, easy-to-read display :: Ready indicator let you know when readings are stable :: Non-volatile memory holds up to 100 data points :: Integral electrode holder