We will have a Delta V Plus with TCEA/Flash EA/Gasbench/Autosampler 
installed soon.  I'm looking for recommendations (vendors, part nos. if 
possible) for the heated trap that is used for cleaning the Helium carrier 
gas.  Does anyone have a unit they are happy with and any comments as to 
the pros and cons of different types?  I found the information that Dr. 
Meier-Augenstein provided in 2007 regarding the Supelco/Sigma-Aldrich High 
Capacity Gas Purifier (#23801).  I'm wondering if this is still the unit of 
choice.  Thanks very much.



Lora L. Wingate
University of Michigan
Department of Geological Sciences
Stable Isotope Laboratory
1100 North University
1013 C.C. Little Building
Ann Arbor, MI 48109-1005