Now that the NIOSH testing laboratory has been axed, how can you tell if a filter is genuine NIOSH or if it's fake? Sometimes, when you are lucky, there are signs...
This is a chinese-made knockoff of a 3M 2097 P100 filter. The manufacturer has copied the appearance of the original except for the 3M logo. But one significant change has been made, it still says NIOSH on it, but it says **KN95**. That is all kinds of wrong.
There's no such thing as a NIOSH KN95. KN95 is an exclusively Chinese designation within the GB2626 2019 standard. And this is a knockoff of a P100 filter. Even the copy should still perform at P100 levels, not KN95 levels.
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• Develop, evaluate, and innovate PPE performance requirements & test methods by integrating advanced PPT & design guidance
• Develop & disseminate strategies & tactics to extend PPT supplies during emergencies, disasters, or PPT shortages
• Develop and disseminate guidance & best practices to inform PPT implementation & enhance user adherence
• Provide national leadership to inform the design & execution of NIOSH’s Respirator Approval Program (RAP) & other PPT conformity assessment schemes
•Expand U.S. capacity for PPT research and innovation
This is from an official presentation by Susan M. Moore, NPPTL Associate Director for Science
NIOSH was working outside the box, including using BARDA competitions to develop innovative respirators and ways to test how well masks seal and protect you.
They were working on using advanced robots with motion and simulated respiration to test how well respirators actually work in simulated workplace conditions, not just under ideal static conditions.
The robot has perfect repeatability, unlike humans, making it easier to isolate and identify design issues.
Clear masks can help people who read lips understand you better and may help in situations where masks are restricted on the claim that they obscure your identity. But to be useful they still need to offer protection from airborne particulates. Not all do.
One that was recommended to me as being popular in the lip reading community did especially poorly, the Safe 'N' Clear "The Communicator" mask. It is a procedural (aka surgical) mask, a design that was not created as respiratory protection & does not seal well.
My "Fix the Mask" N99 Fit Factor for "The Communicator": 3
What I mean by " 'Fix the Mask' N99 Fit Factor: 3" is that I sealed the mask to my face as tightly as possible with an elastic Fix the Mask brand mask fitter (a best case scenario) and the air inside the mask was only 3 times cleaner of sub-micron particles. Without Fix the Mask the N95 FF was 2.
The Savewo 3DMask Smile is has tons of pedigrees – KF94, FFP2, ASTM Level III surgical mask – but didn't give me great fit out of the box. With Fix the Mask I got a FF of 12, so the air was 12x cleaner when sealed as best I could. Your results could be better or worse since fit is so individual.
If you are thinking, that's just salt, not viruses, not to worry. Scientists have tested N95s using real viruses using an international standard test called Viral Filtration Efficency (VFE). N95s filter viruses extremely well.
Can you make a cheap Amazon Plague Mask into an effective tight fitting PAPR mask?
Yes, yes you can. If you happen to already have a bunch of stuff everyone totally has lying around their home:
I've also done a 4 exercise OSHA fit test in this hacked Plague PAPR mask and passed - well, I got a great fit factor but the hacked mask isn't OSHA compliant, nor is fit testing a PAPR with the blower on, so some might say it didn't pass. 🤔
I may put together a longer video in horizontal format, the one I originally shot, but I'm trying to make my videos less boring and am giving YouTube shorts a try. 😅
More from @NIOSH's Respiratory Protection Week presentation by Susan M. Moore, NPPTL Associate Director for Science:
Respirator fit solutions for people with beards.
The Singh Thattha technique can help, but it is not yet OSHA approved. NIOSH is studying this method.
Currently OSHA fit test regulations require smooth skin at the respirator seal, as shown in this graphic.
But some people have beards for cultural, religious and even health reasons that are incompatible with those regulations. Solutions are needed for equitable safety.
Facial hair has a demonstrable effect on respirator seal and protection, and some masks work better with facial hair than others even without special methods to improve the seal, but it isn't really about whether they are KN95 or N95 or KF94, but individual mask models and design
Thoughts about @NIOSH's Respiratory Protection Week presentation by Susan M. Moore, NPPTL Associate Director for Science:
The presentation showed current and future source control respirators, including a NIOSH exemplar model source control elastomeric mask for HCWs.
I was glad to see elastomeric source control respirators highlighted. Dr. Moore referenced industry creating source control elastomerics for the pandemic. But the 3M mask with the exhalation filter shown is a bit of a mixed bag.
3M created an exhalation filter that fits on a single model of 3M mask, the 6000 series half mask respirator, a good but lower end model with no speech diaphragm. The filter was a good emergency stopgap, but not a good long term solution.