Dissolved Oxygen Sensor Lutron DO 5510 is a high-accuracy dissolved oxygen meter and portable dissolved oxygen meter designed to measure dissolved oxygen and temperature in water and other liquids. This reliable water quality tester is ideal for environmental monitoring, aquaculture, and water treatment, and also supports use as a dissolved oxygen meter for agriculture. This DO meter features a polarographic oxygen probe with a built-in temperature sensor, functioning similar to a dissolved oxygen test kit by delivering precise and reliable readings. It offers temperature compensation, a large LCD display, and quick response for accurate dissolved oxygen measurement in water and air. Applications: Aquarium, Medical research, Agriculture, Fish hatcheries, Laboratory, Water conditioning, Mining industry, Schools & Colleges, Quality control.