A low temperature incubator for Bio-Chemical and Biological experiment. This incubator is designed to maintain constant temperature for use in making standard B.O.D.(Bio-chemical Oxygen on Demand) Determiations on water and sewage can also be used for serum studies, enzyme testig fruitfully cultivation, tissue cultural works, Immunology, preservation of vaccine etc. It cosists of a double walled, inner chamber made of aodised aluminium or stainless steel 304 grade with three adjustable shelves. The outer body is made of Mild Steel sheet painted with white, a glass door helps view the sample without disturbing the temperature of the chamber. The temperature range 5⁰C to 50⁰C & accuracy of ± 1⁰C lockable door, lamp operated with opening of door, with Digital electronic temperature controller-cum-indicator. The cooling is done by sealed Shriram/Kirloskar compressor circulating fan is provided to maintain uniform temperature in chamber. The temperature is controlled automatically according to enviorement temperature suitable for 230 V AC mains with cord and plug pin.