OMG. We also experience the same thing. We are not sure what it's from. Our hood install has been only a year old and we have been using it for metals digestions using EPA 3050B. I would like to know what is causing this. I have yet to take it apart to see what the root cause of this is.
Anyone have an answer?
Richard Van Doren
Quality Assurance Manager
423 Pacific Ave., Ste. 101
Bremerton, WA 98337
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU]
On Behalf Of Elizabeth Brubaker
Sent: Thursday, October 12, 2017 4:14 PM
Subject: [DCHAS-L] Fume Hood Ducting
Has anyone experienced accumulation of oil (perhaps mineral oil from a heated oil bath?) in fume hood duct work? Is this reasonable or even possible? Could a sufficient amount remain in the system for it to condense out in the ducts when
the exhaust fans were turned off for an extended period?
Murray State University Department of Chemistry
2226 Jesse D. Jones Hall
Murray, KY 42071-3300
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