From:
000006c59248530b-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU
Subject:
Re: [DCHAS-L] Malfunctioning Hot Plates
Date:
Apr 17, 2025 09:56 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<036e01dbaf7e$f94e7410$ebeb5c30$@verizon.net>
In-Reply-To:
<946065159.2048801.1744802338500**At_Symbol_Here**mail.yahoo.com>
This has been a growing problem as most hot plates today have all solid state components which have no true failsafe (failure) mode. In an effort to cut costs the quality of their components is also being reduced aggravating the frequency and risk of them failing.
See these articles for more information and discussion;
Runaway Heaters, https://www.linkedin.com/pulse/runaway-heaters-richard-palluzi/
High or Over Temperature Protection In a Research Environment, https://www.linkedin.com/pulse/high-over-temperature-protection-research-environment-richard-palluzi/
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Yamaira Gonzalez
Sent: Wednesday, April 16, 2025 7:19 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Malfunctioning Hot Plates
Couple of years ago there were many reports about Runaway Hotplates. This link has an article about the issue and risk mitigation best practices. Catching up with runaway hot plates
Recently, a researcher had two hotplates (IKA brand- see model below) failed. In this case the hot plates overheated a flask with solvent. Probe was inserted correctly and the setpoint was well below the boiling point of the mixture. Nothing was done differently than other times the plates were used. I'm not sure how old the units are.
Has anyone heard of IKA hot plates failing or overheating?
115V 50/60Hz, 620W
0-1100rpm
IKA WERKE
Probe
IKA ETS D4 fuzzy
Yamaira Gonzalez, Ph.D., ASP
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