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Coronavirus: Proper protection
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  • kurthkurth

    @robertGL.... that's not what you said. If you're using a mask, which is what you said...or any kind of respirator that seals around your nose and mouth, you'd best shave because beards will allow corona inside ! And there's a big difference between the size of gas molecules and microdust. Corona would be smaller than microdust, although if it's traveling in a droplet it'll be bigger. I'd imagine, if an n95 mask traps a corona inhabited droplet, the water will vaporize and the still active virus would be deposited on the masks exterior, and could theoretically find it's way thru. Hepa filters are the best...nearly 100% for .3 microns. And there's lots of posts about hi-end respirators, but try to buy one. Not available.

  • robertGLrobertGL

    That's because a higher rated respirator are the tyvek hood types with forced or supplied air that cost a whole lot more. My job has those also and facial hair are not a problem. Again, they are higher level/cost

  • kurthkurth

    @robertGL...why would you think a beard wouldn't be a big deal destroying the seal of your mask with coronavirus ? You're seriously wrong.

  • robertGLrobertGL

    For my job, I have a 3m face-shield mask, and give it 8/10 stars. It is pretty comfortable and can make a good seal. Facial hair can undo the seal pretty easily though, but that shouldn't be a big deal with covid; it's more a hazard from noxious gas or microfine dust

  • alcomposeralcomposer

    Yup, could even be 3D printed, with generic rubber gasket attachment.

  • Vitaliy_KiselevVitaliy_Kiselev

    On masks/respirators fitting

    Instead of making hrrrid tracking apps, both Apple and Google needed to make 3D face scan app so oyu could get perfect mask/respirator in nearest goverment center (or shipped to you at home).

    Such apps are not hard (as they exist, as well as algos) and 3d scan can be done using usual front camera (but you need to turn you had slowly).

  • Vitaliy_KiselevVitaliy_Kiselev

    @mee

    For bike it is best to use 3M 6500QL series, as you can instantly lower it, and as you get off you can get it on back in a second.

  • meemee

    The masks VK is posting are indeed the best route. Honeywell makes very good ones with very soft silicone for about $40USD with replacement cartridges about $2 - $4 for a set of two. Cheaper than n95 in the long run, and if you put it on right you will know, as you will feel the suction and hear the pressure release on exhaling. Sorta like Darth Vader. The thing that makes these so good beyond typically better filtration is putting the cartridges away from your mouth means they stay dry and don't act as incubators for viruses. The good ones have a sorta diaphram (dual on some) that allows your breath to come out instead of going back out through the filters. Just be aware when you wear it long enough it will drip from the diaphram, so if you are in public, a hanky or something to wipe your drips would be considerate, and obviously safer for others around you if you were sick. Honestly good respirators are more comfortable than N95 as they do not slip around. It is probably worth mentioning if you ride a bike or do similar activity you want to slow down as it is hard to get as much air, and at the very least it will make you winded easier and give you a headache. Worst case, you pass out.

  • Vitaliy_KiselevVitaliy_Kiselev

  • Vitaliy_KiselevVitaliy_Kiselev

    Good article on filtration

    image

    https://multimedia.3m.com/mws/media/409903O/respiratory-protection-against-biohazards.pdf

    Simple masks efficiency

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  • Vitaliy_KiselevVitaliy_Kiselev

    Different standards

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  • Vitaliy_KiselevVitaliy_Kiselev

    @kurth

    I made separate topic at http://www.personal-view.com/talks/discussion/23749/coronavirus-masks-and-respirators-discussion

  • kurthkurth

    the future.... https://nasofilters.com/n95-mask/ and these were on amazon and disappeared.... bearhoho https://www.krobeysm.com/index.php?main_page=product_info&products_id=754402 ... and from china, although not n95, they're probably on the way.... https://www.aliexpress.com/i/32812157356.html .... and maybe a piece of duct tape , huh?

  • kurthkurth

    ny telling frontline medical staff they will have to work w/o ppe.... https://www.nydailynews.com/coronavirus/ny-coronavirus-protective-equipment-ppe-hospitals-memo-20200403-yfziltd3bfewjkptunzsf7cmee-story.html .... I'd quit, but maybe they'll be laid off first.... can I use "unbelievable" too often ? ....https://www.nytimes.com/2020/04/03/us/politics/coronavirus-health-care-workers-layoffs.html

  • Vitaliy_KiselevVitaliy_Kiselev

    @kurth

    For now most advanced thing that can be applied in real life for real people is few sizes of silicon seal.

  • kurthkurth

    @Vitaly....how about how they make hollywood prop masks, where a mold is taken of your face, and only a filter ring is inserted. This could allow a smaller mask that only covers the mouth and nostrils. Or maybe just a tiny nostril mask and breath exclusively thru the nose while using ? Life can't return to any sense of normalcy with everyone dressing up to go scuba diving.

  • Vitaliy_KiselevVitaliy_Kiselev

    @kurth

    Actually, original post have link to reusable mask that is cheap (yet slightly small, for smaller faces or womans)

    https://aliexpress.com/item/4000780665632.html

    All this "3d printed" masks are total crap as you need good seal and this is only possible with injection made rubber or silicone.

    @jleo graphics is clearly VERY misleading and looks like something juts put arbitrary numbers.

  • kurthkurth

    @jleo....I don't understand how a surgical mask , which isn't form-fitting to the face, would protect the same as an n95. Doesn't make sense. When I lightly blow with my mask on, I feel no current escaping. That can't be true with a surgical mask, even when they have some type of strip to bend to the shape of the nose. When someone is inhaling a percentage of air will be drawn in around the edge. Here's an article on the different types of n95. Valved performed better.... https://www.quora.com/Is-an-N95-mask-with-a-valve-on-it-better-than-one-without ...the person that invents an efficient, light, comfortable and reusable mask at a reasonable price will get rich. Maybe 3d custom printing with ?...oops, someone's already there... https://copper3d.com/hackthepandemic/

  • jleojleo

    [VK Edit]

    Chart attached below seems to have no proof.

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  • jleojleo

  • Vitaliy_KiselevVitaliy_Kiselev

    @kurth

    My present understanding is that constant push for eyes part and touching are intentional.

    • First, this virus in regard of distribution and survival is NOT original and same as all his peers. Despite media claims.
    • Second, my understanding is that virus can't get into your blood and go into other areas (!) and your eyes can get tiny amount of it only with nowhere for it to expand. Virus needs air movement and huge space he gets inside lungs.
    • Third, lot of this claims constantly do not mention specifics and real proof. It can be that lot of medical personell constantly contacted heavy ill patients and inhaled virus (due to issues with mask) while telling how they properly weared the mask or respirator. And it is recorded in statistics as touch distribution. Also medics in such places can't and shouldn't be compared to usual people (as they are exposed to 1000x more virus particles and for 1000x longer time).
    • Forth. As far as I checked all claims about virus touch distribution - it is based on samples collection and using PCR. Thing is that it is incorrect method, as fact of RNA part being present do not make this virus calable of doing anything, it can be part of totally dead thing and does not mean that it is enough of this viruses.

    My own understanding is that public media do not push all this narrative randomly. As it allows to break normal logic of offering to block distribution using proper masks. It also allow to guide people attention to non important places and not become responsible for lack of masks and proper state storage of such things.

    Look at other topic - http://www.personal-view.com/talks/discussion/23743/coronavirus-taiwan-korea-and-japan-paradox#Item_3 and look at the strange media behaviour. As only thing in common among this countries and China is... strict discipline and wearing masks. Shitty simple cheap masks (efficiency will be around 100x if they move to best solutions). While their economies did not stopped so much and people are nicely walking in the parks (in EU all of them are locked and protected!).

    It is big data on fighting flu and older coronaviruses and it shows quite good efficiency of Aisan approach.

  • kurthkurth

    @Vitaliy....I had to wear my n95 gel lined for an hour and a half at the bank. It's very hot. I'd prefer to stay home ! A full mars mask would give me claustrophobia. I'll go live in the mountains before I'll become accustomed to this crap ! And per your "how you catch the virus....remember that dr david price er doctor video where he said the exact opposite....that most people were getting it by touching . And I remember reading about wuhan doctors saying the eyes were a big contagion point. So we can only assume we can catch it just about every way there is.

  • MikeLinnMikeLinn

  • Vitaliy_KiselevVitaliy_Kiselev

    Filters inside (P3 HEPA filter inside)

  • MikeLinnMikeLinn

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