The incubator has a double walled chamber. The inner chamber is made of stainless steel and the outer body is made of mild steel duly powder coated. The temp. inside the chamber is controlled by a PID digital temp. indicator cum controller with PT-100 sensor. The temperature range from ambient (+5°C) to 90°C ± 0.5°C is controlled by P.I.D. controller. The chamber consists of a air circulation fan. Rotator is inbuilt and is provided with racks to hold six bottles (60 mm Dia × 200 mm Depth) at a variable speed of 2 to 20 rpm. The viewing glass window in the door allows inspection of the specimen inside the chamber.