Precautions for wearing a mask1. Use timeFrom the perspective of human physiological structure, because the blood circulation of the nasal mucosa is very strong, the passage in the nasal cavity is very tortuous, and the nose hair constitutes a filtering "barrier". When air is sucked into the nostril
Scientific common sense about masks（3）7. Can protective masks be washed? Can it be disinfected?3M particulate protective masks (sometimes called disposable masks) cannot be used after cleaning and disinfection, because the cleaning and disinfection methods usually lead to reduced filtration efficien
Scientific common sense about masks（2）4. Is it necessary to use medical protective masks to protect against viruses? What is the difference between medical N95 and N95 protective masks?Medical protective masks are protective masks designed to protect medical workers in a specific medical environment
Scientific common sense about masks（1）1. What kind of particulate protective mask (sometimes called disposable mask) can be used to help protect against viruses?The World Health Organization (WHO) and my country's medical management agencies recommend that, in some cases, use N95 approved by NIOSH,
The birth and development history of masksIn recent times, due to the epidemic, masks have become a must-have item that various countries are vying to buy, which has made a common daily item a hot commodity. In order to meet the demand for masks, many companies in my country have begun to transform
Mask selection method and fabric introduction（2）For the filter material of a good protective mask, the following three conditions should be met. One is that the filter efficiency is high when the mask is in good contact with the user's face, the other is low breathing resistance, and the third is th
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