All,

We have operations where we only need to protect the product being tested and not the worker, mostly procedures where we are looking for very low levels of non-hazardous particulates on the surfaces of pharmaceutical containers.   Although we call the laminar flow units we use for these procedures clean benches, not hoods.

But we also have a hood we purchased from Air Control (Microvoid) that is used for ICP prep where we are looking for very low levels of metal ions.  It has both a laminar flow through a HEPA filter to protect the product/testing and also draws air into it, like a standard hood, to protect the worker.  It is constructed entirely of a polymer – no metal whatsoever.  We purchased it because our scientists felt that they were getting contamination from our regular hoods in their work.  It seems to alarm quicker than a regular fume hood… there is a lot more going on with the air flow… and it is also more challenging to do the annual PQ on it, we have to call in an expert. 

Pat Peifer

From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Monona Rossol
Sent: Friday, November 08, 2013 12:47 PM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: Re: [DCHAS-L] laminar flow hood purchase

Shelly,

    From what I have seen, the Laminar Flow Hoods are one of the best on the 

market.  Performing Lockout/Tagout audits, I see a lot of the bench top vertical 

models.  Here is a link for your viewing.

www.laboratory-supply.net/laminarflowhoods/shop_vertical_laminar_flow_hood_4feet.html?gclid=CI2kq_eL07oCFTJp7Aodsz4AAA

I hope this helps you out.

Respectfully,

Mark C. Lee

Safety Manager Specialist

Lockout/Tagout Specialist

> On Nov 7, 2013, at 10:11 AM, "Bradley, Shelly" <Bradley**At_Symbol_Here**HENDRIX.EDU> wrote:

> 

> One of my faculty is interested in a laminar flow hood. I know nothing about 

them.

> What do I need to know?

> Are the self-contained ones any good?

> Which brands are best?

> 

> Thanks for your help!!

> 

> Shelly Bradley

> NRCC-CHO

> Authorized OSHA Trainer

> Instrumentation Specialist

> Laboratory Development Assistant

> Campus Chemical Compliance Director

> Department of Chemistry

> Hendrix College

> Conway, AR 72032

> Ph:    (501) 450-3812

> Fax:    (501) 450-3829

> bradley**At_Symbol_Here**hendrix.edu