Features:

• Measurement on scales of 90, 250, 600 and 999 ppm BOD
• Higher values can be measured by diluting the sample
• Fits directly on the bottle containing the sample
• Automatically stores 5 BOD values at 24-hour intervals
• Enables analysis to continue over the weekend
• Results directly readable at any time, even after five days
• Direct readout in mg/l (ppm)
• Compact stirring stations
• Models with stirring stations offer VELP stirring quality
• IP 54 protection against particle and liquid ingress
• Class 3 IEC 1010 conformity

BOD (Biochemical Oxygen Demand) Determination is a simple and easy way for monitoring the microorganisms' activity in water samples with extremely reliable results.

In particular, microorganisms present or inoculated in a water sample containing biodegradable orga-nic substance, consume oxygen for their metabolic activity and produce a corresponding volume of carbon dioxide.

The carbon dioxide get absorbed by a strong alkali positioned in the neck of the bottle. The result of this process is a decrease in gas pressure. The BOD measure this change in gas pressure between the beginning to the end of the analysis and give a result expressed in mg/l.