Quote:
Originally Posted by Newbiesaukee
As usual, I agree with almost all of your comments. But for clarification, KN95 is a designation used by the Chinese government, not a US rating. As such, compliance by Chinese manufacturers with that standard is spotty. There have been numerous examples of fraud as there are with many such Chinese products. I have also bought some of these masks but I have no way of knowing whether they really perform as they are supposed to.
The whole “non-medical”use masks (as almost all the masks including KN95 masks are so labelled) is confusing. But that is where we are. And using a mask is better than not using one. The N95 designation is recognized for PPE.
Now if we could all learn to use them properly, they would be even more effective.
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Good point on Chinese labeling not being as reliable as ours.
One of my neighbors is a researcher at MIT, and she has personally tested numerous brands. This is from a post of hers on another forum, including links to purchase:
High-quality surgical mask suppliers
Examples of brands and suppliers of masks with >90% filtration that I have tested at Lincoln Labs and U. Mass Lowell (data and assay information available by request,
jrc@mit.edu) and/or that Aaron Collins has tested (see 3rd tab here
https://tinyurl.com/y6yyz7w3 and video
https://www.youtube.com/watch?v=Gu0GkjOpOj0).
• BLUNA, Dr. Puri, Blue and BOTN KF94 masks from behealthyusa.net
• LG Airwasher KF94 from
https://www.everydaybeautylab.com/ppe
• Powecom KN95 masks from bonafidemasks.com/Powecom-kn-95/
• AirQueen Breeze (comes with earloop clip), AirBon (child size) and AirQueen from
https://tinyurl.com/yxwd9pf6
• Printed masks from
https://masklab.us/
• Flat masks from
https://www.armbrustusa.com/