Change to “N” 3-Layer Face Mask Manufacturers to indicate “not resistant to oil”.' Disposable medical masks can not stop PM2. Many people will misunderstand that the label 'sterile' indicates that the mask can be sterilized.N95 masks can be worn in haze days: not reusable. Wang Ping introduced that medical masks are more resistant than ordinary masks in function. It is better to use a cotton gauze mask with more than 12 layers. Such masks are too tight and have poor breathability.5 protection effect. Activated carbon masks Cannot filter PM2.
The outer packaging is printed with '12P', indicating that this mask has 12 layers of gauze. 12-layer gauze mask is effective but not beautiful Note: Try to clean it every day, do not rub it hard. In fact, the mask is sterilized by ethylene oxide, which represents the degree of cleanliness and has nothing to do with the filtering effect. In special occasions, such as medical treatment and visits to patients, the general Citizens should also choose medical masks. Among them, the value of 95% is not the average value, but the minimum value, so the average value of actual products is mostly set above 99%. The reporter found that this kind of gauze with more than 12 layers is not sold in every pharmacy like a disposable mask, but only in individual pharmacies, because people generally think that such masks are 'unsightly.
Expert introduction: N95 masks are not suitable for all people. Information from the website of the General Administration of Quality Supervision, Inspection and Quarantine shows that the current N95/N99/N100 masks of 3M Company on the market are industrial protective masks developed for the protection of industrial and mining workers such as mines, cement production plants and electric welding workshops.
Experts pointed out that whether it is a general mask or N95 mask, it will be replaced after 4 hours, because the mask has been filled with harmful particles, and it will be inhaled by the human body if it is not replaced.5, and they cannot achieve the desired PM2. The smoke, mining, dust and quarrying dust in such places are far more polluted than urban air pollution.5 is a kind of particles.5 particles, but activated carbon powder itself may also become a source of particles.
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