Alcohol can absorb the water of bacterial proteins, leading to dehydration, coagulation and inactivation of bacterial proteins, so it can be used for sterilization. At present, mainly medical alcohol is used for disinfection, but it should be noted that industrial alcohol contains methanol, so it can not be used for disinfection.
Alcohol used for disinfection of its concentration has certain requirements, the concentration is too low can not be dehydrated coagulation of bacterial proteins and kill bacteria, the concentration is too high when the surface of bacterial proteins will be rapidly dehydrated coagulation, so as to form a layer of protective film on the surface, preventing it from entering the interior, resulting in a reduction in the effect of disinfection and sterilization.
Generally, the appropriate concentration of alcohol sterilization is 70%-75%, and people who are allergic to alcohol should be cautious in using it. Since alcohol is flammable, you must pay attention to safety when using it. Alcohol is recommended to be purchased from professional pharmacies to avoid the use of counterfeit products, which may affect the disinfection effect.