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Letter: Clarifications on N95 Masks

Discussion in 'The Main Board' started by twp, Jan 29, 2020.

  1. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    For those who, like I, are finding conflicting information about N95 masks on the internet (who would ever have expected that?:eek:)

    https://survivalblog.com/letter-clarifications-n95-masks/

    This is a lengthy article in the form of a letter to SurvivalBlog.com

     
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  2. Atlas

    Atlas Administrator Staff Member

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  3. Atlas

    Atlas Administrator Staff Member

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    What do you all think about the washable type of masks?
     
  4. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    While I like the idea of a 'washable' mask, I don't know if they are designed for the small size particles (virus) and if they work after repeated washings.
    If anyone has a link to more information on 'washable' masks, please post it here.
     
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  5. Atlas

    Atlas Administrator Staff Member

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  6. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    The Vogmask looks like it might work to filter virus sized particles. I like the 3 year lifespan quoted in their website.
     
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  7. WolfBrother

    WolfBrother Well-Known Member

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    I may have missed it. I did not see a clear “Will block virus” statement.

    I liked what I read. If it blocks virus then it would be a go.
     
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  8. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    I'm going be the particle size specified in the website.

     
  9. Atlas

    Atlas Administrator Staff Member

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    Out of curiosity, what size are virus?
     
  10. WolfBrother

    WolfBrother Well-Known Member

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    I’ve not found a “this is this size” chart/list but one water filter site said from 0.05 to 0.3.

    I’m looking for aerosolized sizes without any luck so far.
     
  11. Atlas

    Atlas Administrator Staff Member

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    So the vogmask may be good to go. That would be nice. I think that comfort is really important when it comes to these things, and this type look like they are pretty good for that.
     
  12. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    Virus, themselves, are VERY small, but when they are in an aerosol spray (droplets), a filter for 0.3 microns is being recommended.
    https://www.portablewaterfilters.org/water-filter-guide/particle-contaminant-size-chart-microns/

    That filter WILL NOT catch all virus, but it is rated to catch 95% of particles of that size. You pays your money and you takes your chances?

    You could probably spend a larger amount of money and get a filter which catch 100%, but that would be expensive. For a little more, your can buy N99 masks, ie. they catch 99% of the particles.

    Look at people wearing biohazard suits. There is an electrically powered air pump and filter system hanging from their shoulder. Expensive.

    Then there is the full environment suit with a SCBA (Self Contained Breathing Apparatus) with its own air supply in a tank and CO2 scrubbers. More expensive.
     
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  13. Atlas

    Atlas Administrator Staff Member

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  14. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    Now, how do I solve my beard problem? No, shaving it is a last resort, in the event of an identified outbreak in our local area. I'd like to have a full head mask ($$$$) just for this reason.
     
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  15. WolfBrother

    WolfBrother Well-Known Member

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    Go here: http://approvedgasmasks.com/escape-hoods.htm
    Look at the escape hoods. IF you want to spend the money, look at the Powered Air Purifier Respirators (PAPR).
     
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  16. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    Thanks @WolfBrother, those are what I want, even if they are expensive.
     
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  17. jimLE

    jimLE Well-Known Member

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    i saved that link to my bookmark.but haven't looked at the price's yet.just like twp.i have a face full of hair.so looking into diff option's is a good/grat idea.but i will trim it back then shave if it's my only route.even then as a last resort.
     
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  18. WolfBrother

    WolfBrother Well-Known Member

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    Beard guys - get a battery powered hair trimmer and use a number 1 guard with a PAPR - it works.
    OR
    Get a PAPR - hook it to a standard CBRN rated respirator and put this ( Quick Doff Hood - http://approvedgasmasks.com/3m-fr-m40.htm ) on the mask/over your head. Any POSITIVE pressure air leakage due to beard will go to inside the hood. ANY air coming in due to beard will go thru the air in the hood that is being replenished by the PAPR.

    I have sent an inquiry about a hood for the http://approvedgasmasks.com/msa-milleniumCBRN.htm . The MSA brochure shows a hood one on the mask, the approvedgasmasks site does not list one. It's time to update my mask, I have some experience with the Millenium mask and prefer it over others .
     
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  19. twp

    twp Make DuckDuckGo.com Your Search Engine. Staff Member

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    Yes, the full head mask/hood would work for me and maybe save my beard. Worst case, I would need to use a manual air pump, in case the battery dies.
     
  20. Atlas

    Atlas Administrator Staff Member

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    When the choice is sealing my respirator and a beard, the beard is going to come off really quick. Buying all that fancy stuff seems like a lot of money just to keep some hair.
     

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