>Dear All:
>
>I am looking for something to replace the toeppler pump in the nitrogen
>line. Any idea about what to use or where to get that?
>Thanks.
>
>Dachun Zhang
>Isotope Lab
>Zymax/Global

Dachun,

You could use a zeolite molecular sieve - e.g. 5A or 13X - frozen in liquid
nitrogen.

Best regards,

Hal


Dr. Haraldur R. Karlsson
Associate Professor of Geosciences
Department of Geosciences, and
Department of Chemistry and Biochemistry (joint)
Texas Tech University
Box 41053
Lubbock, TX 79409, USA

(806)-742-3130 office
(806)-742-3112 lab
(806)-742-0100 Dept. fax