I don't know about the assembly you speak of, but I understand it is 
relatively easy to machine a fitting for the He line at the base of the 
column.  Contact Craig Cook at Ehleringer's shop at the University of 
Utah.

On Jun 30, 2006, at 11:46 AM, Patricia Beddows wrote:

> Hello Isogeochems,
>
> I heard recently that it was possible to buy a gasket assembly that 
> attaches
> to the bottom of the column on a Finnigan TC/EA which then allows for 
> the He
> to flow in at the base, around the outside of the ceramic column, and 
> then
> down through the middle of the glassy carbon column. Does anyone have
> contact information for the company selling these gasket assemblies?
>
> Cheers,
> Patricia
>
>
> __________________________________________________________________
> Dr. Patricia A. Beddows
> Postdoctoral Research Fellow
>
> School of Geography & Earth Sciences
> McMaster University
> BSB-235, 1280 Main St. West
> Hamilton, ON
> Canada, L8S 4K1	
>
> Tel: 905-525-9140 x 24659
> Fax: 905-546-0463
> ___________________________________________________________________
>
>
-- 
*************************************************************
Steve Nelson
Associate Professor
Dept. of Geological Sciences
S-389 ESC
Brigham Young University
Provo, UT  84602

801-422-8688

"Guns don't kill people, Dick Cheney kills people."

George W. Bush:  Decider in Chief
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