By admin / 13 Jan 2024
Ethylene oxide (EO) sterilization is a widely used method for sterilizing medical devices, pharmaceuticals, and other products that cannot be effectively sterilized by traditional methods such as steam sterilization. Ethylene oxide is a colorless gas with a sweet odor, and it is highly effective at killing microorganisms, including bacteria, viruses, and fungi.
In a sealed area, the items to be sterilized are exposed to ethylene oxide gas. The gas permeates the packing and reaches all surfaces of the goods, ensuring complete sanitation. Ethylene oxide is very beneficial for sterilizing heat-sensitive and moisture-sensitive goods that may be damaged by other methods of sterilization. Ethylene oxide sterilization is mostly used for medical devices, such as surgical instruments, catheters, and implants, as well as for items like pharmaceuticals, cosmetics, and some food products.
1. Preconditioning: The items to be sterilized are placed in a chamber and exposed to controlled humidity and temperature conditions to enhance the effectiveness of the ethylene oxide.
2. Sterilization: Ethylene oxide gas is introduced into the chamber. The exposure time varies depending on factors such as the type of material being sterilized and the required level of sterility.
3. Aeration: After the sterilization process, the chamber is ventilated to remove residual ethylene oxide gas. This step is crucial because ethylene oxide is highly toxic and poses health risks to humans. Aeration ensures that the sterilized items are safe for use.