• BOD Sensor system (115V): 6 Sensors, 6 Bottles, and a stirring station
• 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), 3-digit LED display 

The Velp Scientifica SA10210136 is an innovative, mercury-free, and extremely reliable BOD sensor system consisting of 6 BOD sensors, 6 bottles, and a stirring station 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.

Microorganisms present or inoculated in a water sample containing biodegradable organic substances, 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 the end of the analysis and provides the result in mg/l.