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
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
(916)616-7548
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