Unless one of the architects is also a chemist, I'd only listened with half an ear. And I'd ask "where that is written." It's not obvious his opinion from actual use, so he thinks this is true from some source. If it is from the manufacture, forget it. If it is from an HVAC engineer, forget it. If it is from a study showing air flow measurements taken during different tasks and worker positions, then evaluate that information in the light of the kind of work you anticipate doing in the hoods.
From: Wolff, Marie <mwolff**At_Symbol_Here**JJC.EDU>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Sent: Thu, Aug 6, 2015 5:32 am
Subject: Re: [DCHAS-L] Fume Hoods
I have a different fume hood question. We are in the design stage
new chemistry lab at a subcampus. Architects are telling us that
with a combination sash (that can work horizontally or vertically)
available and would be better for students who need accommodations.
anyone have experience with this kind of fume hood? What are
advantages/disadvantages of the combination sash fume
Dr Marie Wolff
Physical Science Coordinator
Joliet Junior College
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