接近一半中国工厂生产的N95口罩竟然不达标！

《接近一半中国工厂生产的N95口罩竟然不达标！》有20条评论

1. Currently using two brands of ASTM level 3 masks, one 3-layer, one 4-layer. Both are made in China. (1) Have you tested such masks for performance & if so, how did they do? (2) What US fabricators are producing these masks?

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2. Why NOT list the factories that failed? if you state its an “unofficial” test anyway… ..you may save peoples LIVES!!! Please list the factory names and let the consumers decide if they wish to buy/use from that factory!! Lives are on the line! Seriously!

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   • Hi Fred! Song here.
     We are willing to provide the list on a case by case basis if you want the specific names. Please contact [email protected]

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3. Guess you do not understand what a baseline is for. By using an actual N95 NIOSH mask like from 3M you validate your testing methodology.

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4. What US Made certified N95 masks did you use for your baseline to make sure your test was properly calibrated

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   • Hi Donald. Song here.
     We didn’t use any mask as our baseline. We tested their filtration ability as N95 masks are supposed to filter 95% of particles.

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5. While this research is invaluable, it would important to know which masks not to wear. Please do so!

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6. Can i share this on the social media?
   Aslo could you tell how do you put your testing sample on the devcie? The testing section seems closed.

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   • Hi Max. Song here. Feel free to share these information as long as for non-commercial purpose with attribution. This is what we meant to be. As for testing methods, please check here: https://smartairfilters.com/en/blog/testing-china-kn95-n95-masks-supplemental-data/

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7. Hi, bought a 3M Half facepiece respirator from China, its marked as GB2626-2006 and the Particulate filters are marked as NIOSH approved N95. This is for non medical use only, DIY, Spray jobs etc, does this conform to UK standards and is it Ok to use?

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   • Hi Stewart, Liz here. Here is an article on the differences among mask grades: https://smartairfilters.com/en/blog/comparison-mask-standards-rating-effectiveness/
     Short answer to your question would be yes, an N95 mask should give you good protection against Covid. If you have a pre existed pulmonary condition, ask your doctor if you can wear a N95 mask. Stay safe!

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     • Thank you Liz, appreciate the answer. As stated I don’t have a medical condition, the mask is just for DIY dusty jobs etc.
       Many Thanks
       Stewart

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   • GB2626-2006 is out of date. It should be marked GB2626-2019. If you have further questions have a lok at the above document on P2 respiratory protection.

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8. https://www.fda.gov/medical-devices/coronavirus-disease-2019-covid-19-emergency-use-authorizations-medical-devices/personal-protective-equipment-euas#appendixa

   https://www.cdc.gov/niosh/npptl/usernotices/counterfeitResp.html

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9. This link is no longer working: https://www.tianyancha.com
   Is there another way to check on the company in China that is making the masks? Any updates on whether China’s tightened checks on the mask is working to remove all faulty N95/KN95 masks? Was there some sort of stamping/approval of which ones meet China’s tightened checks?

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   • You’re right, it’s a pain! That website doesn’t seem to work outside of China. Here’s the link to a website that does: https://www.qcc.com/

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     • Paddy, You seem credible. Problem is that after reading your article there is more fear as we have no way of knowing who in the hell made masks that are from China. We also have had major issues with Chinese food products.

       I think you should source and test the masks yourself and sell them or at least lot test a source that you trust and “approve” them…..kind of like a Rabbi certifying Kosher food.

       Besides being very resentful of China’s antics with the virus and hoarding I have also used KN95s where the strap fell off! There are so many vendors and the prices are high.

       You are there on the ground and know how corners are cut in China and can discern shady producers from quality producers.

       We need a recommendation.

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10. thanks for performing this testing and sharing the results!

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11. Hi Paddy, do you or anyone else you know offer testing services for N95 masks?
    Thank you

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    • Hi Latha! We do have testing services for N95 masks, however they can’t be used as official government certifications. I’ve heard that the companies which can offer N95 certifcation have a backlog of several months’ worth of orders.

      More info on our testing service can be found here: https://smartairfilters.com/cn/en/product/mask-effieicncy-test-certification/

      Other than that, you could try getting hold of a particle counter similar to the Met One and perform tests using the test setup in our supplemental data.

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