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Show HN: I bought and tested the filtration of every mask on Amazon

armbrustusa.com

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Re: Show HN: I bought and tested the filtration of every mask on Amazon

#41
So much focus is on N95 masks, but P100 full-face respirators are AMAZING. I bought one for a home construction project I as doing. I was fully expecting fully labored breathing. To my surprise, my breath was completely unhindered. You also have full visibility and your glasses don't fog up, which is nice. I could definitely wear a full-face respirator all day.

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#43
post #41

So much focus is on N95 masks, but P100 full-face respirators are AMAZING. I bought one for a home construction project I as doing. I was fully expecting fully labored breathing. To my surprise, my breath was completely unhindered. You also have full visibility and your glasses don't fog up, which is nice. I could definitely wear a full-face respirator all day.

these don't have filtered output, do they?

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#44

What’s the best mask for not caring about Covid but wanting everyone to think that I do? Is there a perfect balance between “double masking” and “American Flag Print Bandana”? I don’t want to go medical grade but I need something surgical that really evokes me in the trenches risking my life shopping at TJs.

You can buy cheesecloth masks on amazon. They aren’t really any more comfortable though than a surgical mask.

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#45

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…

[deleted]

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#46
That's a real trove of information!

I see there are no cloth masks tested. I'd love to know how useful they are (or can be) as I much prefer being able to reuse my masks.

Edit: just realised that both Type and Style can be cloth and the cloth ones are presumably all under Style. All of them failed :(

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#47

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…

Table only shows mask names on mobile. Don’t be surprised if your announcement doesn’t have the impact you wanted it to. You need a website that does its job on mobile.

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#48

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 would be interested in separating them for statistics.

for those interested, here's a first level breakdown of pass/fail by country

  | country   | # pass | # fail | pass rate |
  |-----------+--------+--------+-----------|
  | USA       |     39 |     27 |        59 |
  | China     |     48 |    186 |        21 |
  | Korea     |     31 |     13 |        70 |
  | Thailand  |      0 |      2 |         0 |
  | India     |      2 |     12 |        14 |
  | Mexico    |      1 |      0 |       100 |
  | Germany   |      0 |      1 |         0 |
  | Singapore |      1 |      0 |       100 |
  | Vietnam   |      1 |      0 |       100 |

also, in this dataset it looks like adult masks have a 66% pass rate as a whole, while kids masks have a 73% FAILURE rate!

So a third question is, are you using adult mask testing methods for testing kid masks as well (which would explain the failure; on the other hand, the kid masks that passed must be quite some mask!), or do kid masks just suck in general?

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#49
post #5

Anyone have a scatter plot of resistance vs filter efficiency? Watching each review would take forever. I want to explore the results visually.

This is a good idea... we can put this together for you.

Make sure that however you graph it, up and to the right is better.

Re: Show HN: I bought and tested the filtration of every mask on Amazon

#50
post #43
post #41

So much focus is on N95 masks, but P100 full-face respirators are AMAZING. I bought one for a home construction project I as doing. I was fully expecting fully labored breathing. To my surprise, my breath was completely unhindered. You also have full visibility and your glasses don't fog up, which is nice. I could definitely wear a full-face respirator all day.

these don't have filtered output, do they?

No, but if everyone is wearing one it doesn't matter. Some of the masks on this site are vented as well.
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