The Gravity Analog Dissolved Oxygen Meter is a complex measurement, it doesn’t always have to be. Some applications only need to know the presence of oxygen in percent saturation.
If you are looking for basic measurements that you can rely on, the Atlas Scientific Gravity Dissolved Oxygen Meter is your solution. This device outputs an analog voltage from 10 mV to 1,000 mV and gives D.O. readings in percent saturation only.