Application of 8403 AZ Dissolved Oxygen Detector:¡El portable 8403 AZ DO meter can measure the value of Dissolved Oxygen with unit of % or ppm or mg/l in liquid, which had been widely operation in the Water Quality Testing applications. It has the big LCD which can display the D.O. (Dissolved Oxygen) value and the temperature. ¡El salinity and barometric pressure could affect the DO measuring accuracy, and that could be adjustable in 8403 AZ Digital DO Device, which could help user to get the accurate Dissolved Oxygen value. ¡El 8403 AZ Digital DO Device can calibrate easily in the ventilation environment, welcome to refer the DO calibration procedure video from the following YouTube link.¡El measuring Dissolved Oxygen data could transmit to the 9680 IrDA Printer to printout. ¡El 8403 AZ Dissolved Oxygen Meter could link to PC via USB cable to capture the on-line data, and display the Dissolved Oxygen readings with real-time output. User can retrieve file, save the data for operating data analysis, record statistics....versatile functions according different purposes. ¡El 8403 AZ Digital DO Device could be the best Water Quality tester for all professional measuring purposes, including the LAB, water treatment business, Aquaculture, Aqua farm, swimming pool or other related industry. ¡El 8403 AZ Dissolved Oxygen Detector was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.