Dry sterilization of an article is one of the earliest forms of sterilization practiced. Dry heat, as the name indicates, utilizes hot air that is either free from water vapor, or has very little of it, and where this moisture plays a minimal or no role in the process of sterilization This trainer is designed to demonstrate the visible training system, operation, theory, repair and servicing of Dry Sterilization equipment that used at clinics & hospitals. The student can study what is inside the trainer. A number of test points are available for measurement of certain electrical points on the circuit. Based on the symptoms and the signal at the test points.