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From: James Kaufman <jkaufman**At_Symbol_Here**LABSAFETYINSTITUTE.ORG>
Subject: Re: [DCHAS-L] Looking for Fume Hood Ventilation system cleaners
Date: Jul 23, 2026 14:47 UTC
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
In-Reply-To: [DCHAS-L] Looking for Fume Hood Ventilation system cleaners
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--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.orgHello everyone,
I have had several colleagues reach out to me looking for methods or a service provider for cleaning the ductwork attached the fume hood system or attached to LEV. Many of these facilities are 35 – 50 years old and have been used for solvents, resins, light ends and a myriad of chemicals. One lab in particular recently reported yellow “goo” dripping from one of the LEV nozzles.
If you have some information, I would greatly appreciate it.
Thanks,
Bridget Morris | Head of SHE, GSI & RC Coordinator | Group Technology |
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