From: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Sars-CoV2 infectivity
Date: Fri, 26 Jun 2020 15:21:18 +0000
Reply-To: Monona Rossol <actsnyc**At_Symbol_Here**CS.COM>
Message-ID: 221123158.189855.1593184878133**At_Symbol_Here**mail.yahoo.com
In-Reply-To <31500AAC-1FC7-4E8B-A454-955074FECE79**At_Symbol_Here**keene.edu>


The references I have are to CO2 in room air.  I actually don't know the significance of higher CO2 in exhaled air, but I know I can't climb stairs in an N95 without what is clearly a CO2 problem for me that is relieved by removing the mask.  But I'm a doddering old asthmatic.  You kids should be skipping around like lambs let out to pasture.

If you want 8 references to data on CO2's effects on people in ASHRAE-vented rooms, let me know off line so we won't overwhelm members.

Monona


-----Original Message-----
From: Stuart, Ralph <Ralph.Stuart**At_Symbol_Here**KEENE.EDU>
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Sent: Fri, Jun 26, 2020 10:54 am
Subject: Re: [DCHAS-L] Sars-CoV2 infectivity

> 900 to 1000 ppm CO2 is also where documented effects on mental acuity can be shown.  It's a nice number. 

Is there a reference for this? I just had one of our librarians who had been wearing a cloth mask for an hour exhale into a CO2 meter and he hit 3500 ppm. After wearing a cloth mask for 20 minutes, I max out around 1500, so I suspect that the longer wearing periods could become productivty problem.


- Ralph

Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
603 358-2859

ralph.stuart**At_Symbol_Here**keene.edu

---
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
--- 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

Previous post   |  Top of Page   |   Next post



The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.