The minimal level of filtration approved by NIOSH is 95 percent. The N, R and P designations refer to the filter’s oil resistance. Here are the main differences among KN95, N95 and KF94 masks ...

The minimal level of filtration approved by NIOSH is 95 percent. The N, R and P designations refer to the filter’s oil resistance. Here are the main differences among KN95, N95 and KF94 masks ...

In 2020, the FDA granted emergency-use authorization (EUA) for some KN95 masks due to N95 masks supply being scarce. However, the FDA has since revoked the EUA of non-NIOSH-approved respirators ...

The minimal level of filtration approved by NIOSH is 95 percent. The N, R and P designations refer to the filter’s oil resistance. Here are the main differences among KN95, N95 and KF94 masks ...