Inverted Pressure Sterilized Boiler

Working principle 

The instrument adopts electronic heating method and uses saturated water vapor steam to damp and heat the tested items under pressure condition. After keeping temperature and pressure for a certain period of time, microorganisms are killed and tested items are sterilized.

Counter-pressure method: During the cooling process after sterilization of tested items (bags), the temperature inside the bag remains higher than outside the bag in the tank, and this can cause pressure difference and make the bag burst. To prevent the bursting, we can inject balancing pressure (counter-pressure) air during the cooling process to keep pressure in the tank and eliminate the pressure difference while temperature decreases gradually.