5PCS Disposable Face Masks Surgical masks
CE FDA Certified
Filtration efficiency: KN95: ≥ 95% of particulate matter
KN95 is an industry standard and means that the mask provides the intended effectiveness of filtering 95 percent of particles with a mass median diameter of 0.3 micrometers.
This widely used standard is equivalent to the N95 standard used by the National Institute for Occupational Safety and Health (NIOSH).