![]() A mechanical engineer by day, Collins’ master’s degree research focused on aerosols. Those are the gold-standard in the U.S., says Aaron Collins. Unfortunately, a year into this pandemic, N95s-especially those made by 3M-are still hard to get. And, in theory, then, KN95s should filter out 95 percent of particles too, but, quality control has been a real problem (more on that below). KF94s, therefore, promise to filter out 94 percent of particles around. candidate and principal investigator of the Respirator Protection Engineering Task Force at Cambridge University. 3 microns in size, says Eugenia O’Kelly, a Ph.D. For example, N95s should filter out 95 percent of all particles around. Masks are rated by how well they're supposed to filter out particles. To keep yourself from making my $64 mistake, learn the basics on how masks are classified, how online retailers work, and what to look for before you hit “add to cart.” Decoding N95, KN95, and KF94 I should know, I purchased what I thought were KF94 masks online two weeks ago. With counterfeit products, misleading marketing, and a real lack of any government oversight, it's a retail quagmire. The problem, though, is that buying masks online is almost (almost) as fraught as online dating. But: With more contagious variants of the coronavirus now circulating in the U.S., it’s time to upgrade. Sure, the mask that makes you look like a cat is cute.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |