• Sensor only; Alkali container sold separately
• Measurement on scales of 90, 250, 600, 999 and 4000 ppm BOD
• Automatically stores 5 BOD values at 24-hour intervals
• Enables analysis to continue over the weekend
• Direct readout in mg/l (ppm)

The Velp Scientifica F102B0133 is an innovative, mercury-free, and extremely reliable BOD sensor for BOD (Biochemical Oxygen Demand) analysis. BOD Determination is a simple and easy way for monitoring the microorganisms’ activity in water samples with extremely reliable results.

Note: This is the sensor only. Alkali container is sold separately. 

Microorganisms present or inoculated in a water sample containing biodegradable organic substance, consume oxygen for their metabolic activity and produce a corresponding volume of carbon dioxide. The carbon dioxide gets absorbed by a strong alkali positioned in the neck of the bottle. The result of this process is a decrease in gas pressure. The F102B0133 BOD sensor measures this change in gas pressure from the beginning to end of the analysis and provides the result in mg/l.