-----Original Message-----
From: Hunt, Alessandra <alehunt**At_Symbol_Here**MSU.EDU>
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Sent: Thu, Sep 3, 2020 12:00 pm
Subject: [DCHAS-L] Face shields and masks
A while ago there was a discussion about face shields not being enough and masks being really a key element in protection.
I am not sure this ahs already been shared but I came across this article that shows some evidence.
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of James Keating
Sent: Thursday, September 3, 2020 11:01 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Goggles & Face mask=fogging
Barbara,
There are face shields available that include a small, battery powered, fan that keeps the face shield from foggy. This type of face shield also provides far better protection than cheaper options. These shields are typically equipped with
chin covering protecting against splash from all directions.
Goggles typically have vents to mitigate fogging. However, that is another subject. If the task has such a high risk for eye damage that goggles are necessary then why include holes in the sides or top of those goggles?
For high risk eye exposure I require employees to wear both safety glasses and a face.
Over the past 40 years I have personally worn and observed employees wearing all manner of face and eye protection.
Most fogging of safety glasses is a result of dirty glasses and moist exhaled air traveling up and under the glasses fogging the inside. Glasses that fit snuggly against the cheeks help reduce the effects of this moist breath. The outside
of the lenses rarely if ever fog.
PPE is always the last resort for hazard control and when necessary should include only the appropriate devices regardless of the cost.
DCHAS Colleagues:
Has anyone found a workable solution to the problem with face mask+goggles= fogging in student chemistry labs?
Thanks for your assistance.
BL Foster
/
Barbara L. Foster
College Safety Officer
Eberly College of Arts and Sciences
West Virginia University
DCHAS Fellow - American Chemical Society
304-293-2729 (desk)
304-276-0099 (mobile)
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