Ethylene oxide is a gas at room temperature, a broad-spectrum sterilizing agent, can kill a variety of microorganisms at room temperature, bacillus, tuberculosis bacilli, bacteria, viruses, fungi, etc..
Ethylene oxide gas, in a certain low temperature, pressure, humidity, closed in the sterilization chamber of the items sterilized special equipment. Sterilizer is generally composed of sterilization chamber, auxiliary rack, electrical control cabinet and computer. Specifically can be divided into sterilization room, vacuum system, heat circulation system, dosing system, door and sealing system, residual gas treatment system, electrical control system and computer testing and handling system.
Bactericidal spectrum, strong bactericidal force, is a high-efficiency sterilizing agent. Epoxy ethylene ring in the low temperature is colorless liquid, boiling point 10.8 ℃, at room temperature for the colorless gas, flammable, explosive, air concentration of 3% or more, that is, there is a danger of explosion. Ethylene oxide gas and liquid have bactericidal effect, but generally used as a gas disinfectant.
1. Sterilization principle: ethylene oxide sterilization principle is through the microbial protein molecules of alkylation, interfere with the normal metabolism of the enzyme and cause microbial death.
Advantages:
① broad-spectrum, high-efficiency killing of all microorganisms;
② strong penetration, can penetrate cellophane, polyethylene or polyvinyl chloride film and the general hard carton;
③ can be used for sterilization of heat-resistant medical devices.
Disadvantages;
① relatively long sterilization time;
② ethylene oxide gas is flammable and explosive;
③ residual toxicity of the sterilized items should be ventilated to dissipate the gas before use.