Offline type - Dissolved oxygen

Laboratory Research Grade Benchtop Dissolved Oxygen and BOD Meter, HANNA HI5421

Laboratory Research Grade Benchtop Dissolved Oxygen and BOD Meter

Highly Customizable User Interface
Color Graphic LCD ...

Waterproof Portable Dissolved Oxygen and BOD Meter, HANNA HI98193

Waterproof Portable Dissolved Oxygen and BOD Meter

Ergonomic, rugged, waterproof (IP67) design
Built in Barometer ...