About This Archive  |	DCHAS-L 2011 Index   |	DCHAS-L Yearly Index
Search All Posts:   Advanced Search     Disclaimer

Check out Safety Emporium for your N95, N99, and face shield needs.

Previous by Date: Subject: Re: Fume Hoods Date: Wed, 21 Sep 2011 12:07:01 -0500 Author: "Clark, Richard C"

Next by Date: Subject: Re: Fume Hoods Date: Wed, 21 Sep 2011 12:05:21 -0700 Author: Michael Hojjatie

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--