How many degrees should be used for alcohol disinfection?

1.There is 75% alcohol for abrasions, do not dilute, there is a little pain, but do not dilute, otherwise the concentration is not enough, it will not have the effect of sterilization and disinfection, and it will lead to infection!!

or 95% is fine, but 95% alcohol is recommended because supplies like razors should be absolutely clean at all times, which is good for the body!!

This is both concentration and purity! If you don't need a very precise reagent, you can use 95% alcohol! But if experimentation is important, it's better to use 100% pure alcohol!

If you are not sure whether there is moisture or not, you can use white anhydrous copper sulfate powder to test, if the solution does not change color, it is 100% pure alcohol, if the solution turns blue, it is not pure alcohol!!

This friend, three questions.

1. For **, the alcohol concentration of wound disinfection is 75%, and it will cause obvious pain when alcohol disinfects fresh wounds, and the wounds with granulation tissue hyperplasia are only slightly painful. When disinfecting normal** tissues, ** feels very cold due to the volatile properties of alcohol.

2. When disinfecting the surface of the article, 75% alcohol is also used, because the alcohol concentration is too high to penetrate the cell membrane of microorganisms, and it cannot kill microorganisms (by coagulating the proteins in the cells of microorganisms). Items should be wiped with water or a damp cloth before disinfection, and then disinfected after drying. Otherwise, the dirt will reduce the bactericidal ability of the alcohol.

3. The concentration of pure alcohol in medical chemistry can reach up to 99%, and the concentration of alcohol sold in laboratories and general pharmacies is 75% and 95%. Purity refers to the number of impurities, the purity of medical alcohol is generally higher, and chemical purity is the highest purity after experimental purity. Industrial alcohol (industrial pure) contains a lot of toxic and harmful substances and cannot be used for medical treatment.

The preparation of chemical reagents in the laboratory should be at least chemically pure alcohol, which can reduce the influence of impurity factors on the experimental results.

For medical purposes, alcohol has a volume ratio of 75%.

Alcohol can absorb the water of bacterial proteins, dehydrate and denature and solidify, so as to achieve the purpose of killing bacteria.

If a high concentration of alcohol is used, the bacterial protein is dehydrated too quickly, so that the protein on the surface of the bacteria first denatures and solidifies, forming a strong envelope, and the alcohol cannot penetrate well into the bacteria, so as to affect its bactericidal ability.

75% alcohol is similar to the osmotic pressure of bacteria, which can gradually and continuously infiltrate into the inside of the bacteria before the protein on the surface of the bacteria is denatured, so that all the proteins of the bacteria are dehydrated, denatured and coagulated, and finally kill the bacteria.

When the alcohol concentration is less than 75%, the sterilization ability is also affected due to the reduced permeability.

That is to say, the strength of alcohol sterilization and disinfection ability is directly related to its concentration, too high or too low, the best effect is 75%.

Problem 1 is not advocated, but it can be used, problem 2 The concentration of alcohol disinfection effect is 70-75%.

Question 3: The alcohol bought in pharmacies is generally 75% now, so you don't have to think about it.

Use 75% alcohol mixed with water for scrub bath cooling, you need to dilute 75% alcohol 2-3 times, about 25%-30% concentration, and pay attention to the temperature of the alcohol used should be 32-34, not too cold alcohol.

Usually, the whole body scrub bath time of alcohol scrub bath should not exceed 20 minutes, and generally speaking, alcohol scrub bath is only suitable for cooling users with high fever, and is not suitable for the elderly and frail or infants and children to use to cool down. It is also necessary to pay attention not to rub the head when scrubbing the bath, and use ice packs on the head at the same time when scrubbing the bath to prevent the constriction of blood vessels throughout the body and headache caused by brain congestion during the scrub.