9502，3M 8205，3M 82 10，3M 9042，3M 8247 .
3M anti-particle mask is commonly known as 3M dust mask. Using protective masks to protect workers' health at work belongs to the category of occupational health. Anti-particulate mask is used to reduce all kinds of harmful particles suspended in the air inhaled through respiratory tract (from coarse dust and floating dust to fine dust, soot and soot produced in various production processes, and air pollutant PM2.5, including fine germs).
The filtration efficiency of anti-particle masks varies from low to high, which is stipulated by the applicable product standards. For example, China's national standard GB2626-2006 stipulates three levels of filtration efficiency (90%, 95%, 99.97%). 3M particle-proof masks are widely used for occupational protection, aiming at the particles produced in the production process, such as mine dust, foundry dust, welding dust, medical dust, wood dust and so on.
Precautions for 3M masks:
1. Users should read the product description carefully to understand the relevant requirements. Unused masks should be stored in the original packaging, and used masks should be stored in breathable bags, such as clean paper bags.
2.3M protective masks can generally be reused, but if you are worried that repeated use will lead to disease infection, you should discard them after one-time use.
3. In any case, when the mask becomes dirty, the parts of the mask are damaged, or the respiratory resistance is obviously increased, it should be replaced in time.
Refer to the above content: Baidu Encyclopedia -3M Mask