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- เผยแพร่เมื่อ 7 ส.ค. 2024
- 3M 8233 Particulate Respirator N100 manufactured by 3M
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I suspect your testing apparatus focusing on a small portion of the mask which also has the valved area caused a larger amount of intake pressure against the valve than usually encountered in normal use. This might explain the less-than-desirable filtration capability.
I purchased 3M 8233 masks 12/28/2021. I have COPD and do not find these masks all that restrictive in breathing. They all seem to be about the same on the amount they restrict my breathing.
By definition, N100 means a filtration efficiency of equal or higher than %99.97. You are expected to know this before making the video. It isn't supposed to be %100, though I see your measurement turns out to be slightly below that lower bound.
BTW, I think you test for a limited range of particulate size, don't you? If so, that's way in the lowest range and probably that's why you easily get ~100% efficiency for several respirators, whereas the most challenging part for any respirator is to filter the medium size aerosols, rather than the smallest ones (~0.1 µm).
It seems so wrong to give it a failing grade because it had a measured efficiency of 99.95%.
Yahya knows what they are talking about. 2.5 um particles are the hardest to filter
How long would it take for you to get a test in for a P95 8271
It's kinda interesting because its got a rubber gasket
This thing is "Amazon's choice ..." it looks good ... how many uses can we use it effectively ... I use it to protect against insulation particles ...
The surface area used to filtrate and let air flow is much smaller than people actually wearing it 🤪
I want to send it in but I'm worried it might take forever to get the results once it gets there.
The N 100 mask is 99.97% arresting of particles of 1 µm or larger. It says not on the spec sheet. Sunset tested at 99.52% then it came within 0.45% of it particle retention rating.
Due to your 5 o’clock shadow it wouldn’t do very much for you.
Do your homework
So homelanders a dr. now?