Type IIRType IIR face masks EN14683 are medical grade face maks made up of 4-ply construction that includes a splash resistant layer to protect against blood and other bodily fluids. ≥98% BFE (Bacteria Filtration Efficiency)BFE measures the filtration efficiency of a mask using viable (live) particles (bacteria) that vary in size from 1 to 5 microns. ≥96% PFE (Particle Filtration Efficiency)PFE measures the filtration efficiency of a mask uisng nonviable (nonliving) particles that are fixed insize from 0.1 micron to 1 micron. CE CertifiedOur CE certified masks are approved and regulated by the European Economic Area for safety, health and Environmental protection standards. Met YY/T0969-2013 StandardsThe masks are medical-grade, with melt blown cloth filtration, providing you with a highly efficient protection. Goods sold are not refundable & returnable unless damaged.