Designed for various applications from school laboratory experimentation to wastewater treatment. Reliable and extremely accurate, yet affordable and easy to operate. Ruggedly designed polarographic probe is conic in shape and suitable for BOD applications. Calibration done in air at the push of a button.

Designed for various applications from school laboratory experimentation to wastewater treatment. Reliable and extremely accurate, yet affordable and easy to operate. Ruggedly designed polarographic probe is conic in shape and suitable for BOD applications. Calibration done in air at the push of a button. Built-in automatic temperature compensation and low-battery indicator are 2 accessory features. 9-V battery, zero oxygen solution, and carrying case included.