From: Ralph Stuart <Ralph.Stuart**At_Symbol_Here**>
Subject: Re: [DCHAS-L] How would you answer this student question?
Date: Thu, 19 Aug 2021 13:01:19 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: 0188F025-5AD1-4D27-A529-112628FE676F**At_Symbol_Here**

> >Are reusable masks okay in lab or only disposable ones because of chemical contaminants?
IČ??m not sure if you are thinking in terms of cloth or paper masks, but I would recommend that any masks that have been splashed on be replaced immediately. Cloth masks present similar challenges as other clothing worn in the lab. Paper masks are not likely to retain fumes, but also wear out fairly quickly. For that reason, new paper masks each class make sense to me.

Good luck to us all!

- Ralph

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


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