KN95

plural KN95s

1. uncountableAn air particulate filtration standard originating in the People's Republic of China, which requires filtration of 95% of air particulates that are 0.3 microns and larger.

   “No one has made this easy, that’s for sure,” said Bill Taubner, president of Bona Fide Masks, the exclusive distributor in the United States for both Powecom and Harley KN95 masks, which are from China. “A lot of people end up doing a lot of research.”

   2022 January 14, Tara Parker-Pope, “How to Find a Quality Mask (and Avoid Counterfeits)”, in The New York Times, archived from the original on 15 Jan 2022

2. abbreviationcountableellipsisEllipsis of KN95 filter, a filter implementing the standard.
3. abbreviationcountableellipsisEllipsis of KN95 mask, a face mask using a filter conforming to the standard.

   Unlike cloth masks, high-quality masks — called N95s, KN95s and KF94s — are made with layers of high-tech filtering material that trap at least 94 to 95 percent of the most risky particles.

   2022 January 14, Tara Parker-Pope, “How to Find a Quality Mask (and Avoid Counterfeits)”, in The New York Times, archived from the original on 15 Jan 2022