Face Mask
The mask industry can be categorized according to the different standards set by different countries. The United States follows the NIOSH 42CFR84 standard, Europe follows the EN standard, and China follows the GB2626-2019 standard.

Under the NIOSH 42CFR84 standard, masks are classified into two categories: N-series and R-series. The N-series masks are designed to offer protection against non-oil-based particles, while the R-series masks are resistant to oil-based particles. The N-series is further divided into three levels based on the filter efficiency: N95, N99, and N100.
| Series | Filtration efficiency≥90% | Filtration efficiency≥99% | Filtration efficiency≥99.97% |
| N | N95 | N99 | N100 |
| R | R95 | R99 | R100 |
| P | P95 | P99 | P100 |
Under the EN Standard, masks are classified into three categories: FFP1, FFP2, and FFP3. These masks are tested for their filtration efficiency against particulate matter and are designed to protect the wearer from inhaling harmful substances such as chemicals, biological agents, and viruses.
| Series | FFP1 | FFP2 | FFP3 |
| Filtration efficiency | ≥80% | ≥94% | ≥99% |
Under the GB2626-2019 Standard, masks are classified into two categories: KN and KP. The KN stands for "non-oily particles protection" while KP stands for "oil particles protection." The KN series is further divided into three levels based on the filter efficiency: KN95, KN99, and KN100.
| Series | Filtration efficiency≥90% | Filtration efficiency≥95% | Filtration efficiency≥99.97% |
| KN | KN90 | KN95 | KN100 |
| KP | KP90 | KP95 | KP100 |
In conclusion, the mask industry has different standards that categorize masks based on their ability to protect against certain particles, whether they are oil-based or non-oil-based. Understanding these standards is crucial in selecting the right mask for your needs.







