Kill or eliminate pathogenic microorganisms in the medium by physical or chemical methods to make them harmless. First, disinfection refers to environmental disinfection, that is, the surface of inanimate objects. At present, it is generally believed that it also includes the body surface and superficial body cavity of living collective. It is generally believed that the disinfection of medical devices and medical environment can meet the disinfection requirements if artificially contaminated microorganisms can reduce the original microorganisms by 99.90%, and it is also considered qualified if naturally contaminated microorganisms can be killed or removed by 90.0%.

Disinfection:

Kill all microorganisms in the culture medium by physical or chemical methods to make it sterile. All microorganisms mentioned here include pathogenic and non-pathogenic microorganisms. Sterilization is an absolute concept, in fact, it is impossible to reach such a level. Therefore, at present, it is internationally stipulated that the survival probability of microorganisms on articles must be reduced during sterilization 10-6.

Alcohol can have both, but not everything.