Accurate, automatic and direct control of your wastewater samples.
BOD “ biochemical oxygen demand “ is an expression for the quantity of oxygen required for biological degradation of organic matter in waste water sample. BOD measurement is therefore used as a basis for the detection of biologically degradable organic matter in water. The difference between BOD and chemical oxygen demand (COD) is that COD additionally registers biologically non-degradable organic matter.
BOD measurement is therefore an important measurement of the effects of domestic and industrial waste water on sewage plants and outflow points.
The Lovibond sensor system BD 600 is a 6 sample system that allows precise measurements of BOD based on the manometric principle. Manometric respirometers relate oxygen uptake to the change in pressure caused by oxygen consumption while maintaining a constant volume. Thanks to the modern integral pressure sensors, it is no longer necessary to use mercury for pressure measurements.
The BOD level of a sample depends on the quantity of organic matter present, which can vary considerably. The Lovibond BOD measuring system BD 600 is therefore calibrated for the various sample volumes and the corresponding measuring ranges listed below. The overall measuring range of the system is 0 - 4000 mg/L
Range (mg/L BOD)
Sample Volume (ml)
0 - 40
0 - 80
0 - 200
0 - 400
0 - 800
0 - 2000
0 - 4000
For all measuring ranges the BOD is shown directly in mg/L
Applications include waste water, determination of biological activity, water treatment plants, analytical laboratories and scientific research.
Highlights of the BD 600 system;
Large brilliant graphic display
Graphical representation of measured values
USB and SD card interface
Mercury-free environmentally friendly
User-selectable time span from 1 to 28 days
Free individual programming of each of the 6 samples
Inductive stirring system
Colour Management In Sight
A sample becomes more saturated with colour as the path length or concentration increases. (Specifically, the relationship of the absorption of light to the properties of the material through which the light is travelling).
The diagram below shows Platinum Cobalt solution of 500 in various path length cells:
The exact same sample in a 6" cell appears vastly different to that in the 1mm cell. As can be clearly seen, the saturation of the colour increases with the path length. The same is true when the concentration of a sample increases, then so does the saturation of the colour.
This proves the importance when communicating colour: it is essential to specify the path length of the cell.