Set of 9 boxes of 50 surgical masks each, conforming to the medical ASTM-F2100 standard. F-size surgical masks for protection against droplet infection and cough etiquette. Three-layer non-woven fabric structure with excellent bacterial/particulate and liquid barrier properties. Fits snugly, minimizing gaps between face and mask. Complies with the US medical standard ASTM-F2100 Level 1. *Price negotiation possible. *We store the items with care, but as they are stored at home, there may be some minor box damage, tears, or stains. Please understand this beforehand. Some boxes have tears, but they are new. #Year-end cleaning #Nimbus #Influenza measures #Coronavirus measures #Nursing care #Virus disinfection #Outdoor #Camping #Saraya #Environmental cleaning #Disinfecting effect #Virus inactivation effect #Medical #Welfare