Health & Wellness

Disposable Masks - Medical Grade

  • Last Updated:
  • Oct 27th, 2020 7:12 pm
[OP]
Deal Addict
Apr 5, 2007
1572 posts
685 upvotes
Canada
JudyCatPerson wrote: @cahk
In your opinion, would a level 3 mask offer any significant advantage over a level 2 mask for preventing COVID?
Context would be working in a community pharmacy and or giving out injections
Thank you!
Judy
No. Level 3 is really designed for the surgical theater where arterial blood may be splashed onto the mask wearer. The difference between L2 and L3 is minimal.
https://www.cardinalhealth.com/content/ ... 0Guide.pdf

If you are just giving injections, I would argue even level 1 will be fine.
Newbie
Nov 17, 2018
93 posts
33 upvotes
cahk wrote: The difference between L2 and L3 is minimal.
https://www.cardinalhealth.com/content/ ... 0Guide.pdf
What does that mean "Sub-micron particulates filtration efficient at 0.1 micron" >=98% ?
If we manage to perfectly seal the edges, it will behave (close) like a N95 ?
Does a surgical mask performs electrostatic filtration ?

What I understand from here is that, except a N95 surgical respirator, there is no requirements for filter performance in surgical masks.
https://blogs.cdc.gov/niosh-science-blo ... 10/14/n95/
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Sep 19, 2002
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Vancouver
blueraindrop wrote: What does that mean "Sub-micron particulates filtration efficient at 0.1 micron" >=98% ?
If we manage to perfectly seal the edges, it will behave (close) like a N95 ?
Does a surgical mask performs electrostatic filtration ?

What I understand from here is that, except a N95 surgical respirator, there is no requirements for filter performance in surgical masks.
https://blogs.cdc.gov/niosh-science-blo ... 10/14/n95/
No, surgical masks are rated using ASTM method, which is less rigorous compared to NIOSH testing used for respirators (N95).

https://www.ncbi.nlm.nih.gov/books/NBK425737/
[OP]
Deal Addict
Apr 5, 2007
1572 posts
685 upvotes
Canada
blueraindrop wrote: What does that mean "Sub-micron particulates filtration efficient at 0.1 micron" >=98% ?
If we manage to perfectly seal the edges, it will behave (close) like a N95 ?
Does a surgical mask performs electrostatic filtration ?

What I understand from here is that, except a N95 surgical respirator, there is no requirements for filter performance in surgical masks.
https://blogs.cdc.gov/niosh-science-blo ... 10/14/n95/
You won't get a surgical mask to form a complete seal like a respirator, and there will always be leakage around the edges.
Regular masks will not perform electrostatic filtration
NIOSH approves respirators. Masks used in medical setting are approved by the FDA.
Newbie
Nov 17, 2018
93 posts
33 upvotes
cahk wrote: You won't get a surgical mask to form a complete seal like a respirator, and there will always be leakage around the edges.
Regular masks will not perform electrostatic filtration
Yes, you are right, I was a little bit confused about the filtration capability of a surgical mask. Searching the Internet to find out if there is any benefit of wearing multiple surgical masks, I found this article (2005). What they found, is that filtration factor doubled when 5 masks were worn, but no combination of multiple surgical masks were able to meet the requirements for a respirator. This apply for airborne particles, if particles are larger then a surgical mask can offer protection to some degree.

https://www.journalofhospitalinfection. ... 7/fulltext
Newbie
Mar 22, 2019
26 posts
12 upvotes
Mr_Fanta wrote: ^ Have you come across any boxes with the labels that say "anti-fog" or "fog-free"? Thanks in advance!
The Medicom Safemask Freeflow Blue Level 3 available at Canadian Dental at $45/box is having anti-fog strip for eyeglasses wearers, though it looks like these masks are made in China instead of USA
Deal Fanatic
Aug 21, 2007
5497 posts
473 upvotes
Markham
so what is the best option for fog-free? for some of my glasses wearing family members...it seems that fog free is quite hit or miss
Newbie
Mar 22, 2019
26 posts
12 upvotes
adeel wrote: so what is the best option for fog-free? for some of my glasses wearing family members...it seems that fog free is quite hit or miss
I found that mask with a true aluminium nose strip is the best to prevent my glasses from steaming up, those thin wire wrapped in plastic still does the job, pure plastic strip always fails
Newbie
Nov 18, 2016
30 posts
7 upvotes
University of Montreal Book store is again selling medical grade masks (ASTM level 2), 29.99$/50pc.
https://www.librairie.umontreal.ca/Prod ... 67&cat7=62, not sure about its quality, but an internet image indicates that its probably made in China...
The Braval brand is owned by Patterson dentalRegional Indicator Symbol Letters Us: https://www.pattersondental.com/Supplie ... PIF_545723, maybe they outsourced the production to China.
You can also order online, the shipping costs 5.5$
P.S. i emailed patterson dental (the owner of this brand) the CSR replied that they don't know whether it is made with an alumium nose bridge or plastic one... if someone has bought this brand, it's welcomed to provide more details/reviews...thanks.
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Last edited by nyfbber on Sep 11th, 2020 4:55 pm, edited 5 times in total.
Member
User avatar
Mar 25, 2008
225 posts
647 upvotes
Metrotown / Burnaby …
Anyone in Burnaby/Vancouver interested in joining forces to order the following?
  1. the Level 2 masks from BYD: https://bydcare.ca/store/ols/products/s ... -face-mask (e.g. 5 people @ $30 for 50 Level 2 )
  2. AND/OR
  3. https://bydcare.ca/store/ols/products/n95 (e.g. 5 people 20 masks each at $100 or whatever other combo we come up with)


Also a lot of you may find this very helpful:
https://making.engr.wisc.edu/mask-fitter/
Newbie
Nov 17, 2018
93 posts
33 upvotes
adeel wrote: so what is the best option for fog-free? for some of my glasses wearing family members...it seems that fog free is quite hit or miss
You can try to use medical tape from the pharmacy to seal the upper edge of the mask, it's very easy and take only 10 seconds to do it in front of a mirror. I did this for a while. I ordered Air Queen masks from Korea, they do not fog glasses, and do not use surgical masks anymore.

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