Medical alcohol is mainly composed of ethanol, there are two concentrations of 75% and 95%, these two concentrations of alcohol is not the same use. The use of medical alcohol is very common, but will be the correct use of alcohol in less than 30% of households. Incorrect concentration of alcohol is not only difficult to achieve the desired effect, but also cause harm to the body.
75% alcohol can be used to disinfect skin and body temperature gauges, such as before injections or to disinfect the skin around wounds. 95% alcohol cannot be used directly on patients, and is commonly used in hospitals to wipe down ultraviolet lamps, while it can be used in the home only to clean the lens of a camera, etc.
Many people use alcohol to disinfect the skin, but it can be used to disinfect the skin.
Many people have a similar misconception: the higher the concentration, the better the disinfection should be, but this is not the case. Too high a concentration of alcohol will form a protective film on the surface of the bacteria, but prevent the alcohol into the bacterial body, it is difficult to kill the bacteria completely. On the contrary, the alcohol concentration is too low also can not. Although the concentration of alcohol is too low can enter the body of bacteria, but can not solidify its body protein, also can not kill the bacteria. It is scientifically proven that the best concentration of alcohol for sterilization is 75%.