From: Louis DiBerardinis <loudib**At_Symbol_Here**MIT.EDU>
Subject: Re: [DCHAS-L] ductless fume hoods for acid digestion
Date: Mon, 26 Jan 2015 14:18:18 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 03811243-A0F1-4343-8073-46AA061042BC**At_Symbol_Here**mit.edu
In-Reply-To <7B39633B01F4EE42A269E983C42F5A4805F323C5**At_Symbol_Here**SULFATE.fsidomain.local>


I would agree with Bob. It is possible but would have to be done carefully, verify the filters work, good ongoing maintenance, detection for breakthrough. See ANSI std Z9.5-2012. Section on ductless hoods for more detail.. 

Lou DiBerardinis
Director. EHS Office
MIT

Sent from my iPhone

On Jan 26, 2015, at 8:42 AM, Dr Bob <drbob**At_Symbol_Here**FLOWSCIENCES.COM> wrote:

Hi!

 

Doubtful it would work.  Anything is possible, but this approach would be my last resort.  My first option would be straight exhaust.

 

Reasons?

1)    Charcoal filters primarily useful on organics. 

2)    Acids require activated filters which are tricky.

3)    Give-back of filters when turned off.

4)    Wide divergence on quality and support of companies making this type of filtered hood…some good many bad!

 

Very Truly Yours,

 

Dr. Bob Haugen

Director of Product and Technology Development

Flow Sciences Inc.

2025 Mercantile Drive

Leland, NC 28451

 

Phone 910 332 4878

 

From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of melissa.ballard**At_Symbol_Here**US.MICHELIN.COM
Sent: Monday, January 26, 2015 6:38 AM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: [DCHAS-L] ductless fume hoods for acid digestion

 

Good morning all! I have to take a minute to get some additional opinions on a topic. I've been approached to provide my 2 cents on the appropriateness of using a ductless fume hood for acid digestion (preparing samples for analysis via AA). This would be for use in an industrial quality lab.

I have my opinion; what is yours?

Thanks!

Melissa D. Ballard, MSPH, CIH, CHO
Industrial Hygienist / Industrial Hygiene Chemist
Michelin North America
1401 Antioch Church Road
Greenville, SC 29605
864-458-1843
melissa.ballard**At_Symbol_Here**us.michelin.com



Spam
Not spam
Forget previous vote

Previous post   |  Top of Page   |   Next post



The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.