About This Archive  | DCHAS-L 2020 Index   | DCHAS-L Yearly Index
person wearing a disposable face shield and surgical style mask

Check out Safety Emporium for your N95, N99, and face shield needs.

Previous by Date:
Subject: Re: [DCHAS-L] Goggles & Face mask=fogging
Date: Wednesday, September 2, 2020 at 2:56:26 PM
Author: davivid <davivid**At_Symbol_Here**WELL.COM> 		Next by Date:
Subject: Re: [DCHAS-L] Goggles & Face mask=fogging
Date: Wed, 2 Sep 2020 20:03:53 +0000
Author: Tammy M. Lutz-Rechtin

From: DAVID Katz <DAKATZ45**At_Symbol_Here**MSN.COM>
Subject: Re: [DCHAS-L] Goggles & Face mask=fogging
Date: Wed, 2 Sep 2020 19:49:03 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: BL0PR05MB53464F827AB1B8E8F17F83C7C52F0**At_Symbol_Here**BL0PR05MB5346.namprd05.prod.outlook.com
In-Reply-To


Do not use a products such as Rain-X on safety goggles.  Rain-X is specifically used for exterior glass.  The directions stated that it is not to be used on the interior of windshields.
 
For diving and snorkeling, spit worked well for the lenses in our masks.  This is definitely not recommended for eyeglasses or safety goggles.  I cannot recall the anti-fog solution I used for my ski goggles.
 
We always used B & L Sight Savers spray for goggles with good success.  It is anti-static and anti-fog.  It's also available in wipe form.  When I was actively teaching, my students were always instructed to use it to clean their goggles at the start of every lab class. Its not expensive at about $5 - $6 for a 16 oz spray bottle.  Also supply soft, lint-free tissues for drying the lenses.
 
David 
_________________________________________________________________________
 
  David A. Katz             
  Chemist, Educator, Expert Demonstrator, Science Communicator, and  Consultant
  Programs and workshops for teachers, schools, museums, and the public
  5003 Canby Dr. * Wilmington, DE 19808-1102 *  USA
  voice/fax: (302) 509-3282 * email: dakatz45**At_Symbol_Here**msn.com
           Visit my web site:  http://www.chymist.com
_________________________________________________________________________
----- Original Message -----
From: davivid
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Sent: Wednesday, September 2, 2020 2:56 PM
Subject: Re: [DCHAS-L] Goggles & Face mask=fogging

Actually, the coating needs to be hydrophilic rather than hydrophobic.
You want the water droplets to spread out into a film rather than bead
up. Rain drops are large enough to roll off a hydrophobic film but fog
droplets are too small to do this.

Dave Lane
Principal
Clavis Technology Development

On 9/2/20 11:16 AM, NEAL LANGERMAN wrote:
> Expanding on my previous reply - what is needed is a hydrophobic film
> that bonds to the interior surface of the goggle.  This is exactly how
> Rain-X and related siloxane in alcohol products work.
>  
> I have never tried one of those products on goggles; they work really
> well on shower doors.
>  
> Easy experiment to do. Curious about the outcome.
>  
> Neal
>  
>  
> Stay healthy and stay safe
> NEAL LANGERMAN, Ph.D.
> 5340 Caminito Cachorro
> San Diego 92105
> +1 (619) 990-4908
>   <mailto:neal**At_Symbol_Here**chemical-safety.com> neal**At_Symbol_Here**chemical-safety.com
>  
> From: ACS Division of Chemical Health and Safety
> <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Debra M Decker
> Sent: Wednesday, September 2, 2020 10:50 AM
> To: DCHAS-L**At_Symbol_Here**Princeton.EDU
> Subject: Re: [DCHAS-L] Goggles & Face mask=fogging
>  
> <Has anyone found a workable solution to the problem with face
> mask+goggles= fogging in student chemistry labs?>
>  
> I wonder if any of the scuba divers in our midst (I'm looking at you,
> Neal Langerman), might have ideas.  I know this has been discussed
> several times over the years but don't recall there being any really
> good solutions.
>  
> D-
>  
> Debbie M. Decker, ACS Fellow
> DCHAS Councilor
> Programming Co-Chair
> Retired Chemistry Dept. Safety Manager
> dmdecker**At_Symbol_Here**ucdavis.edu <mailto:dmdecker**At_Symbol_Here**ucdavis.edu>
> (916)616-7548
>  
>  
>  
>  
> --- For more information about the DCHAS-L e-mail list, contact the
> Divisional membership chair at membership**At_Symbol_Here**dchas.org
> <mailto: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

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.