Sterilization method of pre-vacuum pressure steam sterilizer:
The whole process of pre-vacuum pressure steam sterilization takes about 25 minutes.
① Put the items to be sterilized into the sterilization cabinet and close the cabinet door;
② Pass steam into the interlayer to make the pressure reach 107.8kPa (1.1kg/cm2) and preheat for 4min;
③ Start the vacuum pump and remove the air in the cabinet to make the pressure reach 2.0 kPa ~ 2.7 kPa (excluding 98% of the air in the cabinet);
④ Stop pumping, input saturated steam into the cabinet to make the pressure in the cabinet reach 205.8 kPa (2.1kg/cm2), the temperature reaches 132℃, and maintain the sterilization time for 4min;
⑤ Stop the input of steam, vacuum again to make the pressure reach 8.0kPa, and make the sterilized items dry quickly;
⑥ Pass the filtered clean and dry air to make the pressure in the sterilization room return to zero, and the temperature drops below 60℃, then you can open the door to take out the items.