Bona Fide Masks has
10-Pack Powecom KN95 FDA Authorized Respirator Ear Loop Mask on sale for $12.50 - Extra 20% Off w/ coupon code
LOVE (
apply in cart) =
$10.
Shipping is free (
via USPS First-Class Mail Package).
Thanks to community member
eb23air for finding this deal.
Note, must apply the listed coupon code to receive discount in cart.
Key Features- Multi-layer filtration system of non-woven soft and breathable fibers
- All respirator manufactured after May 20th are affixed with an anti-fake stakes that can be used to verify authenticity
Material- Ear loop style; latex free
- 46% non-woven polypropylene, 28% melt-blown fabric, 26% ES hot air cotton
- Nose piece w/ adjustable aluminum piece
About This Product- The Powecom KN95 respirator is intended for personal use and not use as a surgical mask or to provide liquid barrier protection.
About This Store- Bone Fide Masks is the Premier Authorized Distributor for Powecom products in the U.S. and Canada. Authentic Powecom KN95 mask are distributed by Bona Fide Masks
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https://bonafidemasks.c
> Face masks sold on this Site are not intended for use as surgical masks or for use in any surgical setting or where significant exposure to liquid, bodily or other hazardous fluids, may be expected; or for use in a clinical setting where the infection risk level through inhalation exposure is high; or for use in the presence of a high intensity heat source or flammable gas; or for antimicrobial or antiviral protection or related uses or uses for infection prevention or reduction or related uses.
We do not claim, represent or warrant that products sold on this Site are safe or effective for the prevention or treatment of patients during the COVID-19 pandemic. ****Face masks and face shields are not FDA cleared or approved.****
What's this disclaimer supposed to mean? Does 3M or other trustworthy brand have the same disclaimer?
> Face masks sold on this Site are not intended for use as surgical masks or for use in any surgical setting or where significant exposure to liquid, bodily or other hazardous fluids, may be expected; or for use in a clinical setting where the infection risk level through inhalation exposure is high; or for use in the presence of a high intensity heat source or flammable gas; or for antimicrobial or antiviral protection or related uses or uses for infection prevention or reduction or related uses.
We do not claim, represent or warrant that products sold on this Site are safe or effective for the prevention or treatment of patients during the COVID-19 pandemic. ****Face masks and face shields are not FDA cleared or approved.****
What's this disclaimer supposed to mean? Does 3M or other trustworthy brand have the same disclaimer?
One example is their reader on surgical vs. non-surgical N-95s. They clearly mark that both types are designed to protect the wearer from airborne particles, including viruses and bacteria (at least for the product examples that they referenced). Definitely shows a huge difference between certified and non-certified equipment. The certified manufacturer is responsible for providing accurate, relevant information and actually supporting the product in its environment. https://multimedia.3m.c
Not designed/intended for use in a surgical or healthcare setting but in desperate times like now they still provide filtration protection and are often paired with a surgical mask worn over it.
Primary difference is fluid resistance.
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You can compare the pictures and see for yourself.
In any case, KN95 should be considered as a step up from cloth and surgical, loose fitting masks, but are not as good as headband, NIOSH N95 folding, and in turn, those are not as good as crush resistant, cup-style N95 which can be layered with a surgical mask above in the highest risk environment.
Hope this helps some.
Handy guide.
Any mfr of KN95 that says FDA approved on the box or claims that FDA Registered means anything (it doesn't) - don't buy from them for more than $1/mask.
KN-95 from firms that also make N95 are more trustworthy, as are Korean, Taiwanese and Japanese firms. Magnum and Venus (India major manufacturers are also trustworthy).
N95 flat fold under $3 is OK and Cup style under $4 is OK as well.
Seems like the same mask - what am I missing? We've currently been ordering a mask that isn't listed on the CDC website. This seems like a step up.
N95 masks are a single use item. They were never designed, intended, or tested to be used more than once. As in, not use for a day, take on and off, all shift. Put it on, take it off, throw it in the trash. Guess what emergency and ICU physicians and nurses have been doing for months? Re-using N95 masks, because there is not much in the way of other options.
Is there some kind of reliable testing and certification of the efficacy of these masks after use and some sort of decontamination procedure? I very highly doubt it.
Do we have data on how long the virus is stable (lasts) on certain surfaces? Yes.
https://www.nejm.org/doi/full/10....jmc200497
https://www.nejm.org/na101/home/l...73_f1.jpeg
Whether you place a mask in a paper bag or a ziplock bag, it seems very unlikely that the virus will meaningfully remain on it after say a week.
If we say that it is "decontaminated," then, the question is, does it still work as intended after re-use? That is a question of fit and filtration. Does it still fit well enough that air is not constantly going around the mask? Does the filtration integrity last? Hard to say. You can get some sense of this yourself. Is it soiled? Is it frayed or destroyed? Is she shape deformed? Etc.
I re-use these.
I understand that surfaces (highly likely less than 10 percent of cases) are much lower risk than inhaling respiratory droplets (most infections are from asymptomatic or presymptomatic people) from a person in their peak infection load period.
Assuming the mail carrier coughed a morning mucas ball directly onto a plastic mail package. An assumed initial viral dose of 10^11 particles/mL based on a person at the peak of their infection is a worse case scenario for the amount of contamination is a good worst case assumption? Let's also assume 1 mL of mucus, though checking for wet spots on a package would lower this amount. This looks like a plastic package would have to stay in isolation for 275 hours (11.5 days) (at 10^4 it takes ~100 hours to get to 0 at 10^4. 10^11 is about 2.75 more on the log scale) at 95 percent confidence interval around 21C, 40 percent humidity for it to have 0 detectable RNA copies on it without cleaning. Take away a day if only 250 particles for an infection (based on some TWiVs microbe.tv/twiv in October). Though the probability of infection increases with multiple exposures. Generally, I assume the inner package is better off since it's typically been at least a couple days since any significant air flow has come in contact with the package and not much mucus would have seeped through.
Surface reference that you are familiar with.
https://www.nejm.org/doi/full/10....JMc200497
viral load-
https://virologie-ccm.charite.de/...age-v2.pdf
or https://www.medrxiv.org/content/1...1.full.pdf
Or on a linear scale at 20:20
https://youtu.be/CjphzlV5DYo
N95 masks are a single use item. They were never designed, intended, or tested to be used more than once. As in, not use for a day, take on and off, all shift. Put it on, take it off, throw it in the trash. Guess what emergency and ICU physicians and nurses have been doing for months? Re-using N95 masks, because there is not much in the way of other options.
Is there some kind of reliable testing and certification of the efficacy of these masks after use and some sort of decontamination procedure? I very highly doubt it.
The results were published in Engineered Science on May 21, 2020.
http://www.espublisher.com/journals/articledetails/284
If you're reusing a (K)N95, N99, or N100 mask, don't sanitize it with alcohol, bleach, nor soap and water after usage because it dissipates the electrostatic charge, which reduces the respirator's submicron particulate efficacy (a micron = 1,000 nanometers, and SARS-CoV-2 particle size is between 60-140 nanometers (nm)).
N95 respirators have an expiration date (5-10 years) due to electrostatic charge dissipation.
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