What is the difference between N95 and KN95 masks?
Regarding the standards of masks, each country or region has its own mask standards. From a common point of view: KN95 is the national standard and N95 is the American standard. 95%.
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KN95 / N95 and above particulate protective masks:
The protective effect is better than that of medical surgical masks and disposable medical masks. It is recommended for on-site survey, sampling and testing personnel. The public can also wear it in places with high concentration of people or in closed public places. The general public generally do not use KN95 / N95 masks.
Can KN95 masks protect against new coronaviruses?
First of all, it can be said with certainty that KN95 masks are anti-virus. KN95 masks are similar to N95 masks, except that one is a Chinese standard and the other is an American standard.
Medical masks are divided into medical protective masks and medical surgical masks. Medical protective masks generally comply with the KN95 (N95) standard and have a very strong filtering ability. Medical surgical masks only provide some basic protection, and the filtering ability is relatively weak, about 70% .
Ordinary masks usually only play some heat preservation and moisturizing functions, and their filtering ability is very weak, but they can resist some droplets and reduce the possibility of infection to a certain extent.
At present, it is basically determined that the new coronavirus can be transmitted through droplets, and all the above masks can actually protect the droplets because the droplets are mouth droplets flying in the air, and their particle size Much larger than dust, the function of the mask is mainly blocking rather than filtering. Of course, the surface layer of the mask must not use hydrophilic fibers such as cotton fibers, rayon and other materials to prevent droplets from being blocked by the surface layer due to the hydrophilicity of the fibers.
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