Medical alcohol can be purchased at the sales department of a medical store.

Buy industrial alcohol at a chemical raw material store or paint store.

Reagent (chemically pure, analytically pure) alcohol can be purchased at a chemical reagent store or medical store.

Alcohol is widely used for medical disinfection (ethanol solution with a volume fraction of 75%±5% is often used for medical disinfection).

Generally, 95% alcohol is used for instrument disinfection; 70~75% alcohol is used for sterilization. For example, 75% alcohol can kill E. coli, E. coli, Staphylococcus aureus, Candida albicans, Candida albicans, Pseudomonas aeruginosa, etc.; lower concentrations of alcohol are used to lower body temperature, promote local blood circulation, etc.

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Extended information:

95 % alcohol is often 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 heat dissipation capacity of the skin, 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.

Reference materials:

/baike.baidu.com/item/ethyl alcohol/135334?fromtitle=%E9%85%92%E7%B2%BE&fromid=114404&fr=aladdin#10_1 "target="_blank">Ethanol-Baidu Encyclopedia