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Subject: Re: Perchloric Acid Hood Duct Design Criteria
Date: Thu, 15 Dec 2011 01:45:12 +0000
Author: 8524828hau**At_Symbol_Here**COMCAST.NET 		Next by Date:
Subject: Re: Chemical Safety headlines from Google (13 articles)
Date: Thu, 15 Dec 2011 07:58:37 -0500
Author: ACTSNYC**At_Symbol_Here**CS.COM


Date: Thu, 15 Dec 2011 04:37:35 -0500
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From: JAKSAFETY**At_Symbol_Here**AOL.COM
Subject: Re: Perchloric Acid Hood Duct Design Criteria
X-To: dchas-l**At_Symbol_Here**med.cornell.edu

My understanding is the it should not be less than 70 degrees and pref.erably vertical 
 
James A. Kaufman, Ph.D.
Chair, ICASE Committee on Safety in Science Education
International Council for Associations of Science Educationwww.icaseonline.net

President/CEO

The Laboratory Safety Institute (LSI)
A Nonprofit International Organization for
Safety in Science and Science Education

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In a message dated 12/14/2011 3:36:53 P.M. Eastern Standard Time, ldmclouth**At_Symbol_Here**LBL.GOV writes:
Hi All -

Is anyone aware of a prohibition against using 45 degree angle ductwork
runs (as opposed to vertical runs) for a perchloric acid fume hood? 
This pertains to water washdown systems.  This question was posed to me
and I thought I'd seek your collective wisdom.
aware of regarding this subject.

Regards

Larry

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