|
Quote
from elsiesemail
Price at Office Depot has gone up to $22.99. Price at Bona Fide Masks still $22.90 for earloops; price for headbands now $29.00. Use coupon code SAVE5 to get 5% off right now on either earloops or headbands at Bona Fide Masks.
:
|
From Bona Fide Mask: DUE TO AN INCREASE IN COVID-19 CASES WE ARE NOW OFFERING FREE DOMESTIC SHIPPING ON ALL KN95 FDA AUTHORIZED MASK ORDERS THRU 7/19/20! ALL ORDERS SHIP FROM OUR WAREHOUSE IN NEW YORK!
|
Quote
from MaroonMaid297
Hey guys don't want to burst your bubble, however, what you are talking about is not a filtration test, but one that has been propagated by social media. You have sadly been misinformed. The only actual liquid barrier test that is performed on respirator masks is for a small classification known as Surgical N95's, which are considered medical devices by the FDA. Also, liquid barrier protection is rated by ASTM and not NIOSH. Your standard N95 from 3m or Honeywell is not designed for liquid barrier protection and the ability of it to hold water has zero impact on filtration. I emailed Powecom after seeing some of these posts just to be sure and recieved the following back:
:
IT IS NOT scientific to test qualified KN95 masks by pouring water into them. The dripping test is just a rumor. Firstly, water will destroy the protection ability of the melt blown filtering layer, that means: Water will destroy the effectiveness of the face mask; Secondly, too much water has weight (universal force[Laugh]) , so too much water will drip. Also, : The first layer of nonwoven material can let O2 (= oxygen ) pass through the face mask. That is why, the 1st Layer of face mask cannot 100% block water, especially when there is too much (for example, a cup of Water , too much water !!) pour in the face mask. This is not a scientific test and should not be used. Below are links from actual testing reports from the NPPTL that may be helpful Guangzhou Powecom Labor Insurance Supplies Co., Ltd.KN95GB262699.2898.962020-211.1pdf icon [cdc.gov] Guangzhou Powecom Labor Insurance Supplies Co., Ltd.KN95GB262699.5698.182020-303.1pdf icon [cdc.gov] Just want to make sure you guys have all the information. N95's are not for liquid barrier protection and neither are KN95's. The only liquid barrier protection masks are real ASTM surgical masks and Surgical N95's, which right now should be reserved ONLY for healthcare professionals. |
Statement for the Medical Device Respirator recalls in Canada
Guangzhou Powecom Labor Insurance Supplies Co., Ltd hereby declare that the following two importers are not our purchasers.We have not found any information about the relevant companies in the sales records. Our company has an export license. All exports in our company's name are genuine.
There are many fake products on the market. The products that fail to pass the inspection in Canada are not exported by our company. Obviously these are fake.
Our main task in February, March and April is to provide the Chinese government with a large number of high-quality and qualified masks.We've been on the EUA list since April 3 . In fact ,CDC has always tested the quality of all respirators,in order to ensure that all the respirators imported to the United States are safe and up to standard. The following four test reports were issued by NPPTL and can be read on CDC website： https://www.cdc.gov/niosh/npptl/R...SULTS.HTML
Government of Canada has issued a RECALL on these products.
Health Canada has determined that certain respirators that do not meet performance standards may pose a health and safety risk to users when used in a setting that requires 95% filtration (such as a health care settings).
https://healthycanadian
Useful links regarding mask reuse and cleaning:
USA today has a good simple article about mask cleaning, including N95 (same as KN95):
https://www.usatoday.co
Official recommendation from CDC :
https://www.cdc.gov/niosh/topics/...xtuse.html
There's a dedicated website about disinfecting N95, contributed by renown researchers and professionals:
https://www.n95decon.or
https://www.n95decon.or
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!
679 Comments
Sign up for a Slickdeals account to remove this ad.
With the kn95 I pull the ear loops straight back behind my ears like normal. The surgical type blue masks seem to tighten up better on my nose if I bring the entire ear loop below my ears and connect lower down on back of my neck.
https://www.amazon.com/stores/pag...4CF695ED2
Thanks. The Comcast ones that come with their cables seem to work. I found two. I probably can find a few more laying around if I look harder
Results when tested on machine:
Filtration of 0.3um particulates:
- KN95 (Powecom, green) - 99%
-N95 (3M 8210 Plus) - 99% Filtration of 0.3um particulates when worn on a face:
Conclusions: - Powecom Chinese KN95 masks have quite good filtration material
Filtration of 0.3um particulates when worn on a face:
- KN95 (Powecom, green) - 5-15%
N95 (3M 8210 Plus) - 87-98%%
- However even the good Powecom brand failed when worn on a face because the fit is not very good at all. Unlike the 3M N95 masks, these use ear straps instead of head straps and are not a shell type mask
However even the good Powecom brand failed when worn on a face because the fit is not very good at all. Unlike the 3M N95 masks, these use ear straps instead of head straps and are not a shell type mask.
So it may be necessary to figure out a way to tighten up these style of masks in order to get good results. Perhaps a rubber band tied between the ear loops to tighten the mask?
Results when tested on machine:
Filtration of 0.3um particulates:
- KN95 (Powecom, green) - 99%
-N95 (3M 8210 Plus) - 99% Filtration of 0.3um particulates when worn on a face:
Conclusions: - Powecom Chinese KN95 masks have quite good filtration material
Filtration of 0.3um particulates when worn on a face:
- KN95 (Powecom, green) - 5-15%
N95 (3M 8210 Plus) - 87-98%%
- However even the good Powecom brand failed when worn on a face because the fit is not very good at all. Unlike the 3M N95 masks, these use ear straps instead of head straps and are not a shell type mask
However even the good Powecom brand failed when worn on a face because the fit is not very good at all. Unlike the 3M N95 masks, these use ear straps instead of head straps and are not a shell type mask.
So it may be necessary to figure out a way to tighten up these style of masks in order to get good results. Perhaps a rubber band tied between the ear loops to tighten the mask?
Sign up for a Slickdeals account to remove this ad.
I ordered on 7/1, it shipped on 7/3 and says it will be delivered on 7/8.
At first when they shipped, it said they would arrive on 7/10.
I already had some of the ear loop and did not want to have to order another ear loop set just to try out the head strap ones. I am not sure they will fit that much better because I have an egg shaped head and all hats, head lights, etc tend to slip down.
I kept trying and finally got free shipping this morning-so YMMV.
I already had some of the ear loop and did not want to have to order another ear loop set just to try out the head strap ones. I am not sure they will fit that much better because I have an egg shaped head and all hats, head lights, etc tend to slip down.
I kept trying and finally got free shipping this morning-so YMMV.
I also understand concerns about fit because of my head shape so I have always modified them to get best face seal.
I had to go to dentist for major work on cracked roots and I wore a Powecom with a surgical mask on top and both cranked down with straps. Seems overdone but dental staff had full bodysuits, double face mask, face shields, negative air, etc. They limited number of people in waiting room but most of them only had cloth masks so I was more concerned about risk from other patients.
- However even the good Powecom brand failed when worn on a face because the fit is not very good at all. Unlike the 3M N95 masks, these use ear straps instead of head straps and are not a shell type mask
However even the good Powecom brand failed when worn on a face because the fit is not very good at all. Unlike the 3M N95 masks, these use ear straps instead of head straps and are not a shell type mask.
https://bonafidemasks.c
Our community has rated this post as helpful. If you agree, why not thank
Sign up for a Slickdeals account to remove this ad.
There is a drop down menu for quantity. For some reason one of the other links in this thread shows minimum at 30.
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!