KF94

plural KF94s

1. uncountableAn air particulate filtration standard originating in the Republic of Korea, South Korea, which requires filtration of 94% of air particulates.

   However, some fake masks made in China may be labeled KF94, so shoppers still need to do their homework.

   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 KF94 filter, a filter implementing the standard.
3. abbreviationcountableellipsisEllipsis of KF94 mask, a facemask 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