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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

#142

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…

If you're open to taking "requests", I'd love to see this Australian one tested. https://amazon.com.au/gp/product/B093B8QKVP/

Good N95 style masks are difficult to get hold of in Australia. A few places are either charging absurd prices (like $10+ per disposable mask), but most pharmacies just don't stock them.

The one above has some fancy photos of certs in its listing, so it would be interesting to see if it's genuinely good. Happy to send some to you if it's helpful (you can dm me on twitter listed in my profile).

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

#143

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…

I looked at the linked page and it had a big list of masks, each of which linked to a page about that mask with a picture but no information such as test results. Was that intended? Could you just ditch all the fancy web design and have a big table with test results for each mask, with an ordering link for the models that you sell? That would be awesome. It would be great if you also sold the stuff you use for testin…

> I looked at the linked page and it had a big list of masks

All test results disappear when the browser window isn't wide enough (eg. on mobile, or narrow PC windows).

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

#145

Earlier quoted context omitted.

Sorting by breathability is broken. It'd be nice if you had pop-up dialogs upon hover over each of the fields. For example, if I hover over breathability, explain what it is and how you measure it. Some color codes/gradient would be nice to help with the visual effect (Green for Pass, Red for Fail etc.) But please do include a toggle for color-blind mode if you do add color.

It's working for me, can you describe what's happening? Good call on the color coding... I'm color blind so didn't think of this :)

When I sort by breathability (Firefox desktop) it goes 9 up to 572 for most of the list then '79.46%' then 80.2-183. The other way it goes 162 down to 9 then '79.46%' then 572 down to 80.2.

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

#146
post #20

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…

My question is after weeks with the same mask… how does it perform… also bonus what kind of additional germs to I get to experience close to my face

You are not supposed to keep the same mask for weeks... They are meant to be replaced after hours.

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

#147

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…

Hi, was interested to see this, but the video is just of you buying them? And the methodology link is to https://www.armbrustusa.com/pages/ which doesn't seem right, and 404s anyway.

From the comments here it seems others have got to the right content, so I'm not saying 'avoid this spam nothing here' or whatever, just not sure what's going on. Accessing from Europe (UK) if that's something to do with it.

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

#148

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…

If you're open to taking "requests", I'd love to see this Australian one tested. https://amazon.com.au/gp/product/B093B8QKVP/ Good N95 style masks are difficult to get hold of in Australia. A few places are either charging absurd prices (like $10+ per disposable mask), but most pharmacies just don't stock them. The one above has some fancy photos of certs in its listing, so it would be interesting to see if it's genu…

[deleted]

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

#149
post #147

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…

Hi, was interested to see this, but the video is just of you buying them? And the methodology link is to https://www.armbrustusa.com/pages/ which doesn't seem right, and 404s anyway. From the comments here it seems others have got to the right content, so I'm not saying 'avoid this spam nothing here' or whatever, just not sure what's going on. Accessing from Europe (UK) if that's something to do with it.

I sorted the list by breathability, filtered out the failed ones, and only focused on the n95/kn95/94 masks (as breathability rating for surgical masks does not make sense, because it is not supposed to be tight), and the top 5 were:

https://www.armbrustusa.com/blogs/mask-review/n95-gerson-duc...

https://www.armbrustusa.com/blogs/mask-review/n95-gerson-duc...

https://www.armbrustusa.com/blogs/mask-review/kf94-dr-puri-b...

https://www.armbrustusa.com/blogs/mask-review/n95-honeywell-...

https://www.armbrustusa.com/blogs/mask-review/n95-indiana-fa...

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

#150
post #147

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…

Hi, was interested to see this, but the video is just of you buying them? And the methodology link is to https://www.armbrustusa.com/pages/ which doesn't seem right, and 404s anyway. From the comments here it seems others have got to the right content, so I'm not saying 'avoid this spam nothing here' or whatever, just not sure what's going on. Accessing from Europe (UK) if that's something to do with it.

I was thinking the same. Do you have a video of you testing some of them as well? It would be interesting to see how it works!
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