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Subject: Re: [DCHAS-L] Masks and Social Distancing

Date: Dec 12, 2020 02:20 UTC

Author: pzavon**At_Symbol_Here**ROCHESTER.RR.COM

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Subject: Re: [DCHAS-L] Exxtremely Cool Visual (not simulation) of Exhalation Streams

Date: Dec 12, 2020 05:30 UTC

Author: Debra M Decker <00001204b93f9a5e-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>

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From: John Callen <jbcallen**At_Symbol_Here**GMAIL.COM>

Subject: [DCHAS-L] NIOSH Technical Report P/N 2021-107: Filtering Facepiece Respirators with an Exhalation Valve: Measurements of Filtration Efficiency to Evaluate Their Potential for Source Control

Date: Dec 12, 2020 04:47 UTC

Reply-To: ACS Division of Chemical Health and Safety

In-Reply-To:  

Demystify: 

ALL,

The subject study is "hot-off-the-press" and is worthy of your consideration.

SUMMARY: https://www.cdc.gov/niosh/docs/2021-107/default.html

This summary has PDF Link so you can read the entire report (attached below).

REPORT: https://www.cdc.gov/niosh/docs/2021-107/pdfs/2021-107.pdf?id=10.26616/NIOSHPUB2021107

The Bottom Line : "These finds have important implications for guidance on source control and mitigation."

It maybe possible that this will open up a blocked avenue of RPE.

After review, I certainly welcome your comments.

Be Safe and Stay Healthy!

All My Best and Happy Holidays,

John B. Callen, Ph.D.
3M Personal Safety Division - Retired
ACS/DCHAS Founding Member
(312) 632-0195

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