According to the technical specifications for disinfection issued in 2003:            Disinfection >            Kill or remove the pathogenic microorganism on the transmission medium to achieve harmless treatment. The requirement of disinfection is that the number of kills ≥ 5 (equivalent to the sterilization rate greater than 99.999%) to evaluate the disinfection is qualified.            Sterilization >            Sterilization refers to the treatment of killing or removing all microorganisms on the media. The requirement of sterilization is that the sterilization rate should be ≥ 99.9999%.            Antibacterial >            The process of killing bacteria by chemical or physical methods or hindering their growth, reproduction and activity. The requirement of antibacterial is that the bactericidal rate ≥ 90% can be used to evaluate the antibacterial effect, and the bactericidal rate ≥ 99% can be judged as strong antibacterial effect.            Bacteriostatic >            The process of inhibiting or hindering the growth, reproduction and activity of bacteria by chemical or physical methods. The requirement of bacteriostasis is that the bacteriostasis rate is ≥ 50% ~ 90%, which means it has bacteriostasis; the bacteriostasis rate is ≥ 90%, which means it has strong bacteriostasis.            liquor            Action concentration            Alcohol can kill the new coronavirus, and people rush to buy alcohol products. But many people ignore the fact that alcohol must reach a certain concentration to be effective.            Source: novel coronavirus pneumonia diagnosis and treatment plan (trial version fourth)            The alcohol content of many hand sanitizers on the market is less than 75%. Some products are only "alcoholic", basically between 10% and 30%. Such hands-free hand sanitizer can't be used to disinfect effectively, and it's not enough to eliminate the new coronavirus.            Of course, the higher the alcohol concentration, the better. According to the recommendation of the World Health Organization, 60% - 80% alcohol concentration can be selected, but the effect is not good if the concentration is too high (90% - 95%).            When you buy, you can focus on the packaging. Basically, the alcohol content will be marked. It's better to choose "75% ± 5% alcohol".