Temperature controlled by Microprocessed PID controller having 4 ramp & 4 soak profile having set mode, alarm parameter, configuration parameter, profile parameter, set point profile, Pv error indicator , parameter for locking etc with Pt 100 sensor. This chamber will have air circulation fan to ensure uniformity of temperature. A carrier to hold bottles (6 no. of 60mm Dia x 200mm Depth) can be easily placed on front of rotater Mechanism any bottle can be taken out easily from the carrier. The carrier rotates with bottles parrelel to the door at a variable speed of 2 to 16 RPM. Veiwing glass window in the door allows inspection of the specimen inside the chamber.