From: John Callen <jbcallen**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] cloth face masks
Date: Thu, 4 Jun 2020 14:54:42 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Just as an "FYI" most respirator manufacturers offer for sale disposable welding respirators (filtering facepiece respirators) N95 which maybe flame-resistant and not fire-resistant.
You can check on their websites to see if they make such claims and meet ASTM D2859 and/or ANSI/ISEA 110-2009 SECTION 7.11.1 tests.
Please be aware that the manufacturers state that these respirators are not a substitute for welding face shields which may also be equipped with auto-darkening lenses and must be worn together with them in a welding or similar work environment.
Also and depending upon the features, quantity and source of supply, they can be 3X to 8X more expensive than the standard N95 disposable industrial particulate respirator N95.
If you have any questions, please let me know. Thanks!
Be Safe and Well,
John B. Callen, PhD
3M Personal Safety Division - Retired
Founding Member DCHAS
CDC is recommending the use of cloth face mask in academic institutions, but the question is what is the best fabric for them. Lab coats in academic labs are supposed to be chemical- and fire-resistant. Does this apply to face masks as well? If so, is there a source for them?
Patricia Redden, Ph.D.
Professor, Chemistry Department
Fellow, American Chemical Society
Fellow, ACS Division of Chemical Health and Safety
SAINT PETER'S UNIVERSITY
The Jesuit University of New Jersey
2641 John F. Kennedy Boulevard
Jersey City, New Jersey 07306
Named #1 in the nation for transformation in 2018 by the American Council on Education/Fidelity Investments
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