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Subject: Re: [DCHAS-L] Masks and Social Distancing
Date: Friday, December 11, 2020 at 9:20:23 PM
Author: pzavon**At_Symbol_Here**ROCHESTER.RR.COM 		Next by Date:
Subject: Re: [DCHAS-L] Exxtremely Cool Visual (not simulation) of Exhalation Streams
Date: Sat, 12 Dec 2020 05:30:34 +0000
Author: Debra M Decker

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: Fri, 11 Dec 2020 22:47:36 -0600
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: F0EA81F7-97D4-4374-BBF9-35C54725525E**At_Symbol_Here**gmail.com


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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