parasaurolophus
Footballguy
That is why you need one on the fda list. There are also some easy steps to verify it is a legit mask. Test for water resistance, test for flammability, candle, and cut it to verify 5 layers. You can also buy extra metal nose strips that you can attach yourself to make the nose seal better. It is 6 bucks for 100 of them. This is where I believe most of the allowed leakage tolerance happens.I can’t find a link to the study now, but a medical provider advocacy group tested a whole bunch of KN95 respirators and found a HUGE percentage of them were counterfeit and didn’t provide the required 95% filtration. Googling shows a whole bunch of other warnings about KN95s. Personally, I would not trust a KN95 respirator to be legit. Even N95s I would be careful on and do what you can to verify they are legit: Tips
ETA: Personal anecdote, but I’ve personally fit tested around 300-400 individuals over the last 6 months and I have had exactly one person pass on a KN95 respirator and I’m pretty sure he faked it because he wanted to wear the KN95 due to the ear loops. Using actual quantitative testing, every single KN95 has failed testing that I’ve personally conducted.
Eta: obviously you do this to only one mask in the batch.
Eta: omg just looked at that link. Some of those mask designs are hilarious. I like the shark tail one
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