I haven’t done a proper fit test (sadly not easily available for nonmedical personal), but wearing the linked mask feels like it’s actually designed to fit while the people that make the normal respirator didn’t think about how to design a respirator so that it fits.
While having no eyewear fogging itself isn’t a sign that it perfectly seals, but I never eyewear fogging with the 3M Aura 9330 and had it regularly with standard FFP2 masks.
The following video shows the basic design of the family of 3M resperiators and how their helps with getting a good fit. The video does suggest that facial hair isn’t ideal but I expect that still most of the air goes through the respirator.
Sure, but if 90% of the air is going through the respirator then N95 gets you 86% filtration while N99 gets you 89%. Which makes me think that once you get to a mask that does serious filtering, the main consideration is how well it fits? Which varies a lot: I’ve tried several different and 95 masks, and now have one that I feel fits pretty well on my face.
I haven’t done a proper fit test (sadly not easily available for nonmedical personal), but wearing the linked mask feels like it’s actually designed to fit while the people that make the normal respirator didn’t think about how to design a respirator so that it fits.
While having no eyewear fogging itself isn’t a sign that it perfectly seals, but I never eyewear fogging with the 3M Aura 9330 and had it regularly with standard FFP2 masks.
The following video shows the basic design of the family of 3M resperiators and how their helps with getting a good fit. The video does suggest that facial hair isn’t ideal but I expect that still most of the air goes through the respirator.
Sure, but if 90% of the air is going through the respirator then N95 gets you 86% filtration while N99 gets you 89%. Which makes me think that once you get to a mask that does serious filtering, the main consideration is how well it fits? Which varies a lot: I’ve tried several different and 95 masks, and now have one that I feel fits pretty well on my face.