N95 masks, KN95 and FFP2: a comprehensive guide to the ...
Oct 19, 2020·N95 masks, KN95, and FFP2 masks: a comprehensive guide to the differences between them The second wave of the COVID-19 pandemic has officially arrived.. The onset of autumn has been marked by a sharp rise in cases in all the major European countries, which have responded by strengthening the precautionary measures in place to protect citizens and the most at-risk members of …