Purism KN95 Masks (non-medical) box of 20
Respirator masks are filtering respiratory protective devices to protect against particles to cover the nose, mouth and chin and are available both with and without inhalation/exhalation valves. The mask consists entirely or substantially of filter material. It is designed to provide adequate sealing on the face of the wearer against the ambient atmosphere, when the skin is dry or moist and when the head is moved. Respirator masks are classified according to their filtering efficiency and their maximum total inward leakage, aimed at guarding the wearer against hazardous atmospheres. When the user inhabits an environment where harmful dusts, fogs, smokes, mists, fumes, gases, vapors, or sprays are present, full face or half mask respirators should be used.
Filtering facepiece respirators (FFR)are subject to various regulatory standards around the world. These standards specify certain required physical properties and performance characteristics in order for respirators to claim compliance with the particular standard.
Health authorities often reference these standards when making respirator recommendations, stating, for example, that certain users should use an “N95, FFP2, or equivalent” respirator.
Please see the equivalence and comparison chart in appendix 1 for different criteria and standards for testing against some of these internationally recognized standards. Respirators certified as meeting these standards in the table can be expected to function very similarly to one another, based on the performance requirements stated in the standards and confirmed during conformity testing. Based on these comparisons, it is reasonable to consider KN95, AS/NZ P2, Korea 1st Class, and Japan DS FFRs as “equivalent” to US NIOSH N95 and European FFP2 respirators, for filtering non-oil-based particles such as those resulting from wildfires, PM 2.5 air pollution, volcanic eruptions, or bioaerosols (e.g. viruses). Prior to selecting a respirator, customers should consult their local respiratory protection regulations and requirements or check with their local public health authorities for selection guidance. The details below outline the testing methodology and performance criteria for KN95 respirators supplied.
KN95 Self-priming filter type anti-particle respirator(unvalved): Certified: CE, FDA, FFP2(GB2626-2006 & EN149:2001)Filter Performance (must be >x% eff.) GB2626-2006/ EN149:2001+ A1 2009 ≥ 95%
Test AgentGB2626-2006 / EN149:2001+ A1 2009 NaCI
Flow RateGB2626-2006 / EN149:2001+ A1 200985L/min
Total Inward leakage (TIL)GB2626-2006 / EN149:2001+ A1 2009≤ 8% leakage (arithmetic mean)
Inhalation resistance –max pressure dropGB2626-2006 / EN149:2001+ A1 2009≤ 350 Pa