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Will painting respirators protect one from the COVID-19 virus?
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beanflying:
The Co-Op is walking distance after coffee in the morning the other options are 20 minutes drive.
KaneTW:

--- Quote from: beanflying on March 23, 2020, 03:54:00 am ---Didn't look at masks due to CBF and I had already won the TP lottery for the day. Add to that DUST masks are largely ineffective against Virus's  :palm:

--- End quote ---

This is factually wrong. See the resources at https://www.3m.com/3M/en_US/worker-health-safety-us/all-stories/full-story-detail/?storyid=8855304f-01cb-4af2-8937-83096cdb4113

Dusk masks of N95/FFP2 class or above protect against viruses.
Electro Detective:

--- Quote from: KaneTW on March 23, 2020, 08:11:23 pm ---
--- Quote from: beanflying on March 23, 2020, 03:54:00 am ---Didn't look at masks due to CBF and I had already won the TP lottery for the day. Add to that DUST masks are largely ineffective against Virus's  :palm:

--- End quote ---

This is factually wrong. See the resources at https://www.3m.com/3M/en_US/worker-health-safety-us/all-stories/full-story-detail/?storyid=8855304f-01cb-4af2-8937-83096cdb4113

Dusk masks of N95/FFP2 class or above protect against viruses.

--- End quote ---


PDFs aside, I'd like to see their lab tests with live viri, filmed and witnessed by independent non-cash biased qualified people

Good luck with any mask if a non-hoax burial-class virus comes along,
assuming formerly nice people  :-* that overnight mutated into toilet paper hoarding zombies  >:D  don't relieve you of your mask by force 
during the mindless mayhem that ensues  :scared: :scared: :scared:


beanflying:

--- Quote from: KaneTW on March 23, 2020, 08:11:23 pm ---
--- Quote from: beanflying on March 23, 2020, 03:54:00 am ---Didn't look at masks due to CBF and I had already won the TP lottery for the day. Add to that DUST masks are largely ineffective against Virus's  :palm:

--- End quote ---

This is factually wrong. See the resources at https://www.3m.com/3M/en_US/worker-health-safety-us/all-stories/full-story-detail/?storyid=8855304f-01cb-4af2-8937-83096cdb4113

Dusk masks of N95/FFP2 class or above protect against viruses.

--- End quote ---

'Dust Masks' in the general disposable types sold at hardware stores are not generally N95 grade filtration they are typically 1-2 micron range not 0.3.
KaneTW:
These are dust masks, just for a finer grade of dust. Yes, the cheapest grade (FFP1, no idea what the US equivalent is) won't block enough. But most commonly used dust masks (at least in my experience) are N95.

N95 masks are rated for 0.3um, but Coronavirus nuclei are 0.1um-ish. The reason masks are still effective is that droplets containing viruses dry out to form larger particles, which are better filterable.

Respirators also have a non-trivial absorbance curve:

While 0.1um particles only have 95-98% efficiency, that's basically what the respirator is rated for anyway.
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