Lab Oven Furnace

Working principle:

Hot Air Oven is commonly used for dry heat sterilization. Dry heat sterilization is a method of controlling microorganisms. The machine is equipped with various components to ensure the uniform heating throughout the chamber. Two jacket design, automatic control unit, PID controlled, PT 100 sensors, temperature preset, etc. allows the machine to work efficiently and return to normal temperature when the test process is over. The working principle is based on fine gravity air convection in an electrically heated chamber.It is designed to simplify the process of dry sterilisation and pre-treatment of different materials like rubber, plastic, etc. As the air inside the chamber becomes hot, it becomes lighter and moves in the upward direction. Inside the chamber of hot air oven the air flows in a forced circulation manner, this allows the appropriate heat distribution inside the chamber. As it reaches the top, the fan inside the chamber pushes it back to the bottom.It employs higher temperatures in the range of 160-180°C and requires exposures time up to 2 hour, depending upon the temperature employed. This creates a circular motion inside the cabinet and makes a consistent circular flow of the air. With this process, eventually, the optimum temperature is achieved.The benefit of dry heat includes good penetrability and non-corrosive nature which makes it applicable for sterilizing glasswares and metal surgical instruments.
It is always to be taken care that articles kept for sterilisation should not be taken out immediately.

Dry heat destroys bacterial endotoxins (or pyrogens) which are difficult to eliminate by other means and this property makes it applicable for sterilizing glass bottles which are to be filled aseptically). Dry heat kills by Oxidation, Protein Denaturation and toxic effects of eleveated levels of electrolytes.Let the oven comes to a normal temperature and then the articles are taken out.