From: "Pikulin, David" <0000132d022df3e9-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] An interesting mask video
Date: Fri, 31 Jul 2020 11:35:57 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: CAD5yASWAzCmmdkYmn4OvdNMM=iU5NJDKRygJhz5BLbyMa0iD8g**At_Symbol_Here**mail.gmail.com
In-Reply-To


While it is far from a perfect demonstration of fluid flow physics, I think it does actually give a good representation of how a mask can aid in slowing the aerosolized spray from a sneeze\cough. Sure there are much better (and safer) videos out there demonstrating fluid flow and masks (Google "fluid flow covid" if you want to look at some). Some of the vocal anti-mask people always point to the micron size of Covid vs. the ability of the mask to filter particles of that size. That argument always ignored that a great deal of the virus expelled is contained in droplets of fluid which can (and are) trapped by masks to some extent.

Again, I agree it isn't perfect in many ways but as a brute force method to show some people that "hey, a mask can stop a spray that is sort of like a cough or sneeze, maybe I'll wear one" I like it. At this point, if this guy convinced just 1 person more to wear a mask I'll take it as a good thing.

On Fri, 31 Jul 2020 at 11:18, Tyrell Towle <tyrelltowle**At_Symbol_Here**gmail.com> wrote:
What did we learn from the video? My take-away is that VOCs do indeed build up behind masks, which is a concern that has been expressed before. This demonstration has nothing to do with the dynamics of how coronavirus might be contained behind a mask or spread without one. This demonstration reminds me of the demonstrations that Dr. Oz performs on his show - demonstrations that have nothing to do with the phenomenon being described except to provide a visual. "Look at how the fat melts away!" (it was some kind of water soluble starch or something being doused with water...).

-Tyrell

On Thu, Jul 30, 2020 at 10:53 AM Nicole Thomas <thoma519**At_Symbol_Here**purdue.edu> wrote:
Thanks for sending the video. It was great! It was humorous and educational..

Kind Regards,
Nicole C. Thomas


From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> on behalf of Melinda Box <melinda.box**At_Symbol_Here**GMAIL.COM>
Sent: Thursday, July 30, 2020 10:50:46 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Subject: Re: [DCHAS-L] An interesting mask video
I think this will be a huge help in communicating with those who might dig their heels in.

Thanks!

On Thu, Jul 30, 2020 at 11:33 AM Jack Reidy <jreidy2**At_Symbol_Here**stanford.edu> wrote:

It certainly does make a point! I was a bit curious about the video creator, especially given his "see you in a couple years" sign off and the response in some of the video comments. Turns out he came out of "retirement" to make this after not posting a video since September 2017.

Jack Reidy (he/him)

Research Safety Specialist, Assistant Chemical Hygiene Officer

Environmental Health & Safety

Stanford University

484 Oak Road, Stanford, CA, 94305

Tel: (650) 497-7614

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Monona Rossol
Sent: Wednesday, July 29, 2020 1:52 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] An interesting mask video

Just my kind of video. Thanks a lot of fun. Thank gosh it was done outside. Not a demo for the faint of heart.

Monona

-----Original Message-----
From: davivid <davivid**At_Symbol_Here**WELL.COM>
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Sent: Wed, Jul 29, 2020 4:00 pm
Subject: [DCHAS-L] An interesting mask video

I just ran across a mask effectiveness video you may find interesting.

It's not one of those lab coat/goggles professional type ones. This one

is aimed at a more blue collar audience and definitely gets the point

across.

It's not something you would do for a class demo. See how many safety

issues you can find.

Cheers!

Dave Lane

Principal

Clavis Technology Development

---

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

--- 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
--- 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


--
David Pikulin
Reclaim Technical Support Manager
Laboratory Manager, New Jersey Branch
Industrial Business
VEOLIA NORTH AMERICA

tel
+1 732 537 4123
/ cell
+1 732 991 8827
/ fax
+1 732 469 7492

125 Factory Lane / Middlesex, NJ 08846

david.pikulin**At_Symbol_Here**veolia.com
www.veolianorthamerica.com




This e-mail message from Veolia is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please communicate with the sender by reply e-mail and destroy all copies of the original message and delete same from all computers.
--- 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.