Скачать или смотреть FFP3 vs N95 - SAVEWO 3DMASK Extreme Pro vs. 3M Aura 9205+

The SAVEWO 3DMASK Extreme Pro is a tri-fold mask like the 3M Aura N95 but has the highest European FFP certification, FFP3.

N95 filters have to pass a minimum 95% particle filtration efficiency requirement. FFP3s have a minimum 99% filtration requirement. You'd expect that FFP3 has to be the better mask. But it's not that simple, in part because the 3M Aura N95s masks filter way better than they are required to for their N95 certification, but also because once you have really good filtration media the most important thing in a mask becomes a leak-free fit. It doesn't matter if your filter stops 99% of particles if they are all going around the mask. So, that means I want to know which of these masks fits better on me, because great fit is required for great protection.

Which will win? FFP3 or N95? I wanted to find out.

Keep in mind that fit is very individual, so YMMV and my results may not be the same, or even in the same ball park, as yours. I have a medium sized face, but a high nose bridge, so masks that leak on me may fit well on other people.

Thanks to u/grw110 for the masks to test.

SAVEWO 3DMASK Extreme Pro product page:
https://www.savewo.com/en/products/3d...

SAVEWO 3DMASK Extreme Pro fitting instructions:
   • Savewo Extreme Pro Respirator Fitting Inst...  

3M Aura product page:
https://www.3m.com/3M/en_US/p/d/b0005...

Aaron Collins explanation of how glasses fogging can be a sign of leaks, but also may not be:
   • Mask Nerd Short - Glasses Fogging == Poor ...  

I'm using a PortaCount fit testing machine that gives scores in "Fit Factor".

Fit factor is the the concentration of particles outside the mask divided by the number inside the mask. So if there were 100 particles outside and 10 inside, 100 divided by 10 is 10, so the air inside the mask is 10 times cleaner and the fit factor is 10. If there are 100 particles outside and only 1 inside, the mask would be a 100x cleaner inside, for a fit factor of 100.

Nerdy details: I'm using a full .02 to 1 micron CNC particle count test - the test used for N99 and N100 fit testing. N95s can and do pass full CNC fit tests, but some have too much filter penetration to pass with less than 1% total inward leakage (filter penetration + filter bypass).

TSI has a testing mode to make it easier for some N95s to pass a fit test by counting only particles that are more likely to be filter bypass:

https://www.kenelec.com.au/wp-content...