The full from of BOD Incubator is Biological Oxygen Demand incubator and it is widely used in microbiology laboratories for the applications that include cell culture and fungal growth, BOD test, fermentation, crop and physiology and various pharmaceutical tests etc. It is also known as low temperature incubator or refrigerated incubator because it is made with temperature range between 5°C to 60°C or with cooling and heating functions under one unit.

Electricity is supplied through mains MCB. Temperature is set through digital PID temperature controller, usually at 20°C. Machine is kept running for 5 days. Refrigeration system starts just after setting temperature. Axial fan circulates air inside chamber. Temperature sensor senses current temperature and give data to PID controller, which furthermore keeps the set temperature constant till desired time.