91–100 of 250 posts
Don't see any of the masks I've been buying off Amazon for a while: https://www.amazon.com/gp/product/B08H3WDXMS/ https://www.amazon.com/gp/product/B087Z7N4XF/ Maybe because not sold by Amazon directly?
I've been buying masks from Armbrust since early in the pandemic. I didn't trust anything on Amazon, and I wanted something made in the US, on the theory that the high-quality stuff made in China would be less likely to be exported.
I have a stack of 50ish Armbrust masks after learning about them last year. Every single one i wore failed at the strap weld within a few minutes. I’ve got a big head and they ran a little small, but this was pure QA fail. I’m guessing they’ve fixed it since then, but i don’t see how people can release products without testing them.
I've been buying masks from Armbrust since early in the pandemic. I didn't trust anything on Amazon, and I wanted something made in the US, on the theory that the high-quality stuff made in China would be less likely to be exported.
Moldex is made in US and the mesh support requires more work to counterfeit.
I've spent about 1,000 hours on this with my team using a very expensive (~$250k) lab and I'd love for this to be a great resource for people when choosing a mask. The heavy lift we are doing here is around our particulate filtration efficiency test in which we do either the NIOSH N95 NaCL (0.3 micron) test or the ASTM 0.1 micron latex particle test. I'd love HN feedback on how we improve the interface and make this…
Your filtration test appears to be only testing the mask fabric, but not the fit. I see a number of surgical masks over 95%. I don't think that would be possible in practice, because of leaks at the sides and top. I'd expect more like 50%. But, you don't appear to have the equipment to do a fit test. Refer to the 3M video on how to fit test an N95. I realize that N95 and surgical masks have different standards, but y…
How to see the ones that failed?
I've spent about 1,000 hours on this with my team using a very expensive (~$250k) lab and I'd love for this to be a great resource for people when choosing a mask. The heavy lift we are doing here is around our particulate filtration efficiency test in which we do either the NIOSH N95 NaCL (0.3 micron) test or the ASTM 0.1 micron latex particle test. I'd love HN feedback on how we improve the interface and make this…
Great work, thank you for sharing it with the world. I am very curious about country stats and have 2 questions. First, I found this one randomly: https://www.armbrustusa.com/blogs/mask-review/kf94-try-mask-... The country of origin on your page says China, but the photo's box says Korea. Is this a mask repackaged and exported from Korea that is actually from China? Second, does "China" also include Taiwan? If so, I…
That said, I have also noticed this... if a manufacturer in China makes a great adult masks, their kids mask is likely to fail standards for filtration AND be harder to breath.
Having made both adult and kids masks I can tell you that there is way less of a demand for kids masks and because of that less attention gets paid to them on the manufacturing floor. Theory: People are just lazy and make worse masks for the kids I think because kids are not paying attention.
Furthermore, kids don't care that it passes standards, they care if there's a dinosaur on the mask or not. Even my own kids tell me my kids masks are boring! So manufacturers put their time on making it fun and not on protection.
We test both kids and adults to the same standards, use the same fabric, etc. Boring but effective :)
https://www.armbrustusa.com/blogs/mask-review/kn95-wwdoll-fl... The review for this mask is a great example of the games on Amazon. The review claims this product is from a well known vendor of counterfeit items. The big claim on this product is that the required printing is not on the mask, so they just write it off then and there. However, clicking the link to the item, the required text is prominitely visible in t…
Beware confirmation bias…
can't be biased if i have like physical evidence of it, but in this post fact world, i guess that might not be worth much???
Don't see any of the masks I've been buying off Amazon for a while: https://www.amazon.com/gp/product/B08H3WDXMS/ https://www.amazon.com/gp/product/B087Z7N4XF/ Maybe because not sold by Amazon directly?
Further details if you care to compare:
* manufactured by: Suzhou Fangtian Industries Co., Ltd.
* distributed by: Endliss Technology Inc.; 30773 Wiegman Rd.; Haward, CA 94544; USA