Check out Safety Emporium for your N95, N99, and face shield needs.
From: Zack Mansdorf <mansdorfz**At_Symbol_Here**BELLSOUTH.NET>
Subject: Re: [DCHAS-L] Face shields ineffective at trapping aerosols, says Japanese supercomputer
Date: Thu, 24 Sep 2020 16:21:09 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: 007e01d692b0$3e502ef0$baf08cd0$**At_Symbol_Here**bellsouth.net
In-Reply-To <000e01d692aa$ac051c40$040f54c0$**At_Symbol_Here**rochester.rr.com>
Wow, a beacon of scientific truth........"The Guardian"
As Peter said, nothing new but also face shields were not to filter anything but rather redirect the airstream with large particles being impacted. If we want to continue the hysteria, let's all only wear N-95's and social distance at least 20 feet or so since 5 micron aerosols might travel that far. Additionally, maybe the supercomputer can decide the actual infective dose by particle size. That would be beneficial to know along with mortality rates or even serious complication rates by age (e.g., risk profiles)
Zack
-----Original Message-----
From: ACS Division of Chemical Health and Safety On Behalf Of pzavon**At_Symbol_Here**ROCHESTER.RR.COM
Sent: Thursday, September 24, 2020 3:41 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Face shields ineffective at trapping aerosols, says Japanese supercomputerNot particularly new information for those of us with some understanding of filtration and aerosols. Still, to quote and paraphrase W. S. Gilbert, "Always happy to have my opinion supported by a competent authority." But as a computer model, "Is this a competent authority?"
Peter Zavon, MS, CIH
Penfield, NY
PZAVON**At_Symbol_Here**Rochester.rr.com
-----Original Message-----
From: ACS Division of Chemical Health and Safety On Behalf Of davivid
Sent: Thursday, September 24, 2020 3:16 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Face shields ineffective at trapping aerosols, says Japanese supercomputerThis article just came out in The Guardian.
"Plastic face shields are almost totally ineffective at trapping respiratory aerosols, according to modelling in Japan, casting doubt on their effectiveness in preventing the spread of coronavirus."
https://www.theguardian.com/world/2020/sep/22/face-shields-ineffective-trapping-aerosols-japanese-supercomputer-coronavirus
Dave Lane
Principal
Clavis Technology Development
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For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
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