It is mainly used in medical environment such as outpatient, laboratory, operation room and so on. The safety factor is relatively high, and it has strong resistance to bacteria and viruses.
In the absence of kn95 masks, the use of medical surgical masks can also be used to block most of the viruses stuck to the droplets
Medical surgical masks can block particles with a diameter of more than 4 microns. According to the general medical standards, for particles with a diameter of 0.3 microns, the transmittance of medical surgical masks is 18.3% in the airtight laboratory;
Medical surgical masks are very similar to disposable masks
Medical surgical masks should meet the Chinese medical industry standard YY 0469-2011
When you buy, you should carefully check whether the standard is printed on the outer package!