From:
rpalluzi**At_Symbol_Here**verizon.net <000006c59248530b-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject:
Re: [DCHAS-L] Gas Sensor
Date:
Aug 10, 2026 12:04 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
In-Reply-To:
[DCHAS-L] Gas Sensor
Normally no. If you have a large LN2 source (several 200 L dewars) in a small area then an oxygen sensor may be prudent but it is rarely necessary given the high ventialtion rates in a normal laboratory,
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> on behalf of Murphy, Dr. Ruth Ann <000019862d8e7db2-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Sent: Wednesday, August 5, 2026 5:18 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Subject: [DCHAS-L] Gas Sensor
Good Afternoon,
Are gas sensors required in chemistry labs with natural gas utilities and/or liquid nitrogen use? If so, what type of sensor is needed? Thank you!
Best,
Ruth Ann Cook Murphy, PhD
University of Mary Hardin-Baylor
(254) 295-4542
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