Whether it is N95, N90, or the national standard KN series, and South Korea’s KF series, these masks can effectively prevent the virus from invading our respiratory tract. N95 means that the filtering effect of 0.3 micron particles reaches 95%, and N90 is 90%. In fact, it is not us who need N95 or N90, but the medical workers who are on the front of the epidemic prevention. For us who only go out for the garbage, the medical disposable mask is entirely enough.

What mask wearing is mainly based on our risk of exposure. For doctors and nurses who are treating patients with “new crown pneumonia”, these high -exposed risks need to wear medical N95 or N95, and whether they are going out to throw garbage, courier, takeaway, or even work and commute, these are low exposure. Risk, we should not fight for precious protection resources with the front line of white.

So is the air purifier useful?

it works.

If you admit that the mask is useful, it is difficult to deny that the air purifier is also useful. Because the principles of the two are basically the same, and the filtering efficiency of the air purifier is better.

The core filters of the air purifier on the market are basically HEPA, which is not less than 99.97%of the particles of 0.3 microns, and the N95 just mentioned is 95%. So the mask can filter out the virus, of course, the air purifier is better.

But that’s not too rigorous,

Because both of them are not viruses, but the vectors of the virus.

Yes, if the virus wants to spread, it is usually necessary to use the carrier.

Looking back at the “new crown virus” that has been confirmed, that is, droplet transmission and contact dissemination, and there is a “retracement” after being announced, called “gas -soluble gum transmission”.

Whether it is droplet transmission, contact dissemination, or air -solving transmission, the root cause of the virus is one, that is, the droplets produced by the patient’s speaking, cough, and sneezing.

Green liquid droplets are “droplets” that are repeatedly popularized, while red is “droplet cores”, which is air -soluble gum. The air -soluble virus is like a small liquid droplet. It floats in the air in the form of particles, and the size of the particles determines the virus transmission. The smaller the particles, the farther it spreads.

Normal people sneezed, hundreds of millions of viruses were sprayed out by the strong pressure of the respiratory tract. The droplets greater than 10 microns quickly fell within a distance of 1-3 meters. In the air in the rice.

Don’t be afraid, whether it is a droplet or a droplet core, it is within the range of masks and air purifiers.

The diameter of the droplet is generally above 10 microns, and it will sink to the ground, and the diameter of the droplet core that stays longer in the air is generally about 0.5 to 5 microns. In other words, whether it is a droplet or a droplet core, it can effectively filter the masks and air purifiers that can effectively filter 0.3 micron particles.

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