DCHAS-L Discussion List Archive
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Subject: Re: Fume Hoods
Date: Wed, 21 Sep 2011 12:07:01 -0500
Author: "Clark, Richard C"
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Subject: Re: Fume Hoods
Date: Wed, 21 Sep 2011 12:05:21 -0700
Author: Michael Hojjatie
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Date: Wed, 21 Sep 2011 13:23:52 -0500
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Janet Baum <baum.janet**At_Symbol_Here**GMAIL.COM>
Subject: Re: Fume Hoods
In-Reply-To: <B06FE04AACB936438D57258499897CD91630D6DA6F**At_Symbol_Here**phxe2k7.tusa.tkinet.com>
Dear Michael, Do you mean *ductless* fume hoods, i.e. recirculating air fume
hoods? There's a huge difference in the IH capabilities between "ductless"
and "ducted" fume hoods, if both are installed correctly. There are many IH
risks and QA/QC considerations in using ductless hoods. Do you have
documented and compelling reasons to consider using ductless hoods?
Janet Baum, DivCHAS
On Wed, Sep 21, 2011 at 10:07 AM, Michael Hojjatie wrote:
> Dear colleagues:****
>
> ** **
>
> ** **
>
> We are in the process of building a new Laboratory and contemplating
> between using Dustless Fume Hoods vs. Ducted Exhaust Hoods. We will be using
> a variety of hazardous chemicals including carbon disulfide, acetonitrile,
> toluene, benzene, some carcinogenic suspect chemicals, hydrogen sulfide and
> sulfur dioxide gases.****
>
> ** **
>
> I appreciate sharing your experiences with ductless fume hoods and whether
> you recommend these type of hoods for hazardous chemical work using the
> aforementioned chemical examples as well as advantages and disadvantages of
> these hoods vs. the ducted exhaust hoods (safety concerns, costs,
> maintenance, etc.) ****
>
> ** **
>
> ** **
>
> Thanks,****
>
> ** **
>
> ** **
>
> Michael Hojjatie, Ph.D.****
>
> R&D director, TKI****
>
> ****
>
Dear Michael, Do you mean ductless fume hoods, i.e. recirculating ai
r fume hoods? There's a huge difference in the IH capabilities between
"ductless" and "ducted" fume hoods, if both are install
ed correctly. There are many IH risks and QA/QC considerations in using duc
tless hoods. Do you have documented and compelling reasons to consider usin
g ductless hoods?
Janet Baum, DivCHAS
On Wed
, Sep 21, 2011 at 10:07 AM, Michael Hojjatie
<mhojjatie**At_Symbol_Here**tkinet.com> wrote:
Dear colleagues:
=A0
=A0
We are in the process of building
a new Laboratory and contemplating between using Dustless Fume Hoods vs. Du
cted Exhaust Hoods. We will be using a variety of hazardous chemicals inclu
ding carbon disulfide, acetonitrile, toluene, benzene, some carcinogenic su
spect chemicals, hydrogen sulfide and sulfur dioxide gases.
=A0
I appreciate sharing your experiences with ductless fume
hoods and whether you recommend these type of hoods for hazardous chemical
work using the aforementioned chemical examples as well as advantages and d
isadvantages of these hoods vs. the ducted exhaust hoods (safety concerns,
costs, maintenance, etc.)
=A0
=A0
Thanks,
=A0
=A0
Michael Hojjatie, Ph.D.<
/u>
R&
;D director, TKI
=A0=A0=A0
--20cf300e5447a5c6ac04ad77ada2--
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