Can cotton gauze mask play a dustproof role?

Hello, cotton gauze mask can't be used as dust mask, which is wrong.

Let me introduce various masks first.

1. gauze mask

One of the earliest protective masks appeared. 186 1 year, Pasteur scientists found that there were germs in the air, which could easily lead to surgical wound infection. In order to solve the present situation, doctors and nurses first cover their nose and mouth with gauze. Gauze masks generally use multi-layer degreasing gauze, which is thick and sweat-absorbent, reusable, easy to wash and cheap. However, gauze masks can only prevent larger particles from entering the respiratory tract and cannot effectively protect industrial dust.

2. Medical surgical masks

This mask is made of non-woven fabric and has three layers, the outer layer has anti-foam design, the middle layer has filtration and the inner layer absorbs moisture. The mask is a plane design, and the edge of the mask does not completely fit the face. It can only resist common germs and dust, and is not suitable for protecting dust particles in the air.

3. Activated carbon mask

Activated carbon mask, made of activated carbon, can resist toxic gases through physical adsorption principle, and can only slightly prevent PM2.5, and activated carbon itself has fine carbon particles, which can easily cause secondary pollution of human respiratory tract once inhaled.

4.N95 mask

Masks originated in the SARS period in 2003. Compared with the first two masks, the N95 mask has a more convenient and professional dustproof effect. N95 belongs to American NIOSH standard. In 2006, China also formulated its own respiratory protection standard GB2626-2006. Mask protection grades are divided into KN90 and KN95. The experiment of 0.3 micron dust shows that the filtering effect of N95 mask is completely worthy of recognition. Therefore, you can choose N95, KN90, KN95 or a dust mask with higher protection level to prevent PM2.5.

Therefore, if smog weather requires dust prevention, try to use N95 mask.

References:

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If you have any questions, you can ask them.