kn-95
FFP2 Respirators
FFP2 respirators of the European Union and KN95 respirators of China. However, slightly different criteria are used to certify their performance, such as the filter efficiency, test agent and flow rate, and permissible pressure drop
n-95
N95 Respirator
N95 respirator as medical devices supplier is a particulate-filtering facepiece respirator that meets the N95 standard of the U.S. National Institute for Occupational Safety and Health (NIOSH) air filtration rating, meaning that it filters at least 95%
mask
Surgical Mask
Surgical masks are made of a nonwoven fabric created using a melt blowing process. They came into use in the 1960s and in developed countries. A shortage of masks is a central issue of the ongoing 2019–20 coronavirus pandemic.