DCHAS-L Discussion List Archive
From: ILPI Support <info**At_Symbol_Here**ILPI.COM>
Subject: [DCHAS-L] Runaway hotplate stirrers Was: [DCHAS-L] Chemical Safety headlines (19 articles)
Date: Fri, 21 Aug 2020 12:13:13 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: 6513AE88-9682-43A9-B785-369F69BBA329**At_Symbol_Here**ilpi.com
In-Reply-To
Technology has evolved to address both of these issues.
Ohaus's Guardian series of hotplate stirrers have two independent safety controls to continuously monitor the electronics and shut off heating before an over temperature condition occurs, drastically reducing the possibility of a runaway situation.
In addition, the higher end models can help reduce unattended operation. They will automatically shut off the heater if no one is detected after a user set "time out" period has passed or if the Bluetooth link between a paired mobile device is broken.
Best wishes,
Rob Toreki
======================================================
Safety Emporium - Lab & Safety Supplies featuring brand names
Fax: (856) 553-6154, PO Box 1003, Blackwood, NJ 08012
Regarding the story on the fire at NDSU:
One of the tags on this story says unknown chemicals, but it was a base bath comprised of ethanol and sodium hydroxide. The fact that the kid left it on a pair of stir plates while he went to lunch is the reason it got out of hand. We were not able to definitively nail down the initial cause, but the stir plates were models that have been identified as having a design flaw that has caused other fires and I know that discussion has appeared several times over the years within this group.
Bret Mayo
Associate Director of Environmental Health and Safety
NORTH DAKOTA STATE UNIVERSITY
Office Phone: 701-231-6299
Cell Phone: 701-238-2720
Email Address:
bret.mayo**At_Symbol_Here**ndsu.eduhttps://www.ndsu.edu/police_safety/
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