1. Individual protection products designed to prevent or reduce dust in the air from entering the human respiratory organs to protect life safety;
2. Material: Anti-particulate masks are mostly constructed with two layers of non-woven fabric inside and outside, with a filter cloth (melt blown cloth) in the middle layer;
3. Filtration principle: Filtering fine dust mainly depends on the filter cloth in the middle. Because the melt blown cloth has the characteristics of static electricity, it can absorb positively small particles. Because the fine dust is adsorbed on the original filter, and the original is charged with static electricity and cannot be washed with water, the self-priming filter type anti-particulate respirator needs to replace the original filter regularly
4. Remarks: The international requirements for the use of anti-particulate masks are quite strict. The anti-particulates in the masks belong to the first level of personal protective equipment, which is higher than earmuffs and protective glasses. Compared with authoritative testing and certification, there are CE certification in Europe and NIOSH certification in the United States, while the Chinese standards are similar to the NIOSH in the United States.
5. Protection object: The protection object is divided into KP and KN. The so-called KP is able to protect oily and non-oily particles, while KN is only able to protect non-oily particles.
6. Protection level: China's protection level is divided into KP100, KP95, KP90 and KN100, KN90, KN95 masks. Among them, the filtration efficiency of KP100 and KN100 is the highest national standard requiring greater than 99.97%, so the safety of use is also the highest.