When disinfecting with medical alcohol with a purity of 75%, which approach is not advisable? Correct answer: Spray alcohol on clothes. Medical alcohol cannot be sprayed directly on clothes, as static electricity can easily ignite.

When disinfecting hands, apply 75% alcohol to your hands 1-2 times and leave it on for 1 minute. Never spray alcohol on clothes. The fibers on the clothes will generate static electricity, which can ignite the alcohol on the clothes and cause severe burns to the body.

　　The effects of alcohol:

95% alcohol is commonly used to wipe UV lamps. This type of alcohol is commonly used in hospitals, but in homes it is only used to clean camera lenses.

75% alcohol is used for disinfection. This is because too high a concentration of alcohol will form a protective film on the surface of the bacteria, preventing it from entering the bacteria, making it difficult to completely kill the bacteria. If the alcohol concentration is too low, although it can enter the bacteria, it cannot coagulate the proteins in the body, and it cannot completely kill the bacteria.

40% to 50% alcohol can prevent bedsores. Long-term pressure on the back, waist, and buttocks of bedridden patients can cause bedsores. For example, when massaging, pour a little 40% to 50% alcohol into your hands and evenly massage the patient's pressured parts to promote local blood circulation and prevent The purpose of bedsore formation.

25% to 50% alcohol can be used to physically reduce fever. Patients with high fever can use it to rub themselves to achieve the purpose of cooling down. Because wiping the skin with alcohol can dilate the blood vessels of the patient's skin and increase the skin's heat dissipation ability, its volatility can also absorb and take away a large amount of heat, relieving symptoms. However, the alcohol concentration should not be too high, otherwise it may irritate the skin and cause the epidermis to lose a lot of moisture.