Now many people use alcohol disinfection to prevent virus infection, but if they want to have the effect of alcohol disinfection, they must use medical alcohol, and the effect of 75% concentration is the best. So how to dilute 95% alcohol to 75%? Let's take a look at this article.
Soap sometimes uses extract, which is usually made by soaking plants in alcohol. Some time ago, some students in the group were discussing this issue. They were not very clear about the choice of alcohol purity. Today, let's talk about the alcohol concentration:
Generally go to the drugstore to buy alcohol. The concentration of external alcohol is divided into 75% and 95%. 90% of people don't know which kind of disinfection and sterilization effect is good with 95% and 75% alcohol? Why use this concentration? Can it be used to disinfect wounds?
Which of 95% and 75% alcohol has better disinfection and sterilization effect &# 8203;&# 8203;&# 8203;&# 8203;&# 8203;&# 8203;
First, find out why alcohol can kill bacteria. The most important thing is to use alcohol to cause protein denaturation, leading to the death of bacteria or viruses. Many people think that the higher the alcohol concentration, the better the disinfection effect. In fact, it is wrong. High concentration alcohol (the so-called 95% alcohol) can rapidly solidify the protein on the surface of bacteria, but it only ends in the outer layer. For some bacteria, its interior is still active, so killing is equal to not killing.
Scientists have confirmed that 75% alcohol can have both protein coagulation and penetration effect to achieve complete sterilization. When we dilute at home, as long as the concentration of alcohol is between 70-78%, it can achieve the sterilization effect of 99%. It is not necessary to dilute to the accurate concentration to have the sterilization effect.
75% alcohol is suitable for disinfecting intact skin without wounds. For example, before injection in the hospital clinic, the nurse will always wipe the needle site with 75% alcohol with a cotton ball. However, for the skin with wounds, please do not disinfect with 75% alcohol. On the one hand, 75% alcohol will cause strong tingling, and on the other hand, it will also affect the wound healing. It is recommended to disinfect with Iodophor.
95% medicinal alcohol is usually used to soak flowers and plants, process traditional Chinese medicine, or make dishwashing essence and detergent. In addition, it can also be diluted into 75% alcohol for sterilization and disinfection.
Alcohol dilution method:
The undiluted concentration of commercially available medicinal alcohol is 95%. Distilled water or boiled cold water can be disinfected according to the need. The diluted concentration of alcohol is 70-75%. The simple method is 3 parts of 95% alcohol and 1 part of water.
For soap and hand-made skin care products, 95% pure alcohol is used for flower extraction, and 75% alcohol is used for disinfection tools.