Samples are placed (automatically) in BOD bottles into one of the five racks of 18 samples. (90 samples in total). The procedure then goes as followed. The Oxygen probe in then set into position, the bottle is capped and filled with Nitrification inhibitor (ATU) and/or seed (option) and dilution water. After stirring the Oxygen level is measured for all samples. This procedure can compare Oxygen levels before and after incubations. The BOD value can then be calculated. The data can be presented on screen, printed or converted to a file compatible with other software and LIMS. This asset is for sale!