Kn95 mask is a domestic mask standard, which conforms to the national standard, and the non oily filter material reaches more than 95% of the standard, that is, kn95 mask. Some people know that N95 mask is the standard of the United States, and N95 is also the standard of filter greater than 95%.


Novel coronavirus pneumonia in Wuhan, what kind of mask should be used?


There are three main types of standards that can resist the new type of pneumonia virus


1. Medical surgical mask


Medical surgical mask is in line with the national standard gb19083-2010 mandatory standard, filtration efficiency is greater than 95% of non oily particles test, and meets the blood penetration test.


2. N95 mask


N95 respirator conforms to NIOSH certification of the United States, and the filtration efficiency of non oily particulate matter is greater than or equal to 95%


3. Kn95 mask


It meets the mandatory standard of gb2626-2006, and the filtration efficiency of non oily particles is more than 95%


2、 How long can kn95 mask last?


Under normal circumstances, kn95 standard masks can be used for 3 days without epidemic situation. However, it is more severe to go to the new type of pneumonia. The doctor's suggestion is to replace the mask every 4 hours. If it is to go to a crowded place, it should be replaced every 1-2 hours.


If the kn95 mask is contaminated, such as in a densely populated area or in an epidemic area, if the kn95 mask is sneezing or coughing on the opposite side, it belongs to the contaminated situation and needs to be replaced in time.


For the front-line doctors in hospitals, they basically use medical surgical masks, goggles and protective clothing, so as to do basic safety protection. Medical surgical masks are basically worn once, and they will be replaced when they are used next time.


Now you know how long the medical kn95 mask can be used. Generally, it can be used for 3 days. However, under the current situation, it is recommended to replace it every 4 hours. It also depends on the surrounding environment. If you are wandering in the community and do not go far away, kn95 mask can be worn several times a day. If you go out to a crowded place, it is recommended to change it every 4-6 hours 2 masks a day.


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