EZO™ Dissolved Oxygen Circuit

Patent Protected


Add & Save

4+ units


10+ units


25+ units


Until you’re faced with the challenge, it’s hard to see why anyone would care about dissolved oxygen. But, here you are.

Accurately calculating the D.O. of water is quite difficult. Once all the mathematical calculations are done, it takes hundreds of chemical titration tests to confirm that the readings are correct over the full scale. The process is agonizing. Fortunately, you don’t have to do any of that. The Atlas Scientific EZO-DO Circuit gives you accurate D.O. readings in Mg/L and percent saturation. Using its temperature, salinity, and pressure compensation features, you can be sure the readings are correct no matter where in the world you are.

ReadsDissolved Oxygen
Range0.01 − 100+ mg/L
0.1 − 400+ % saturation
Accuracy+/– 0.05 mg/L
Response time1 reading per sec
Supported probesAny galvanic probe
Calibration1 or 2 point
Temp. compensationYes
Salinity compensationYes
Pressure compensationYes
Data protocolUART & I2C
Default I2C address97 (0x61)
Operating voltage3.3V − 5V
Data formatASCII
Circuit dimensions13.97mm x 20.16mm (0.55″ x 0.79″)
Weight:1.77 grams
Scroll to Top

To track your order please enter your Order ID in the box below and press the "Track" button. This was given to you on your receipt and in the confirmation email you should have received.