Heavy duty robust construction with Inner chamber made of stainless steel-304and outer made of Mild Steel sheet duly enamel painted. Glass window allowsinspection of samples without disturbing the inner chamber temperature. Fourstainless steel adjustable shelves are provided with the unit. Air circulation fan isalso fitted to the unit for temperature uniformity. Temperature range from 10° Cto 60° C±2° C is controlled by Dual Setting Microprocessor PID Controller andhumidity is controlled by Microprocessor PID controller from ambient to 95% ±3%RH. Arrangement exists only for increasing the humidity and not for decreasing.Fitted with exterior illumination achieved by fluorescent tube and 0-24 cyclictimer. To work on 220/230 volts AC supply. Inner chamber.