With regard to GC-IRMS standards, Chuck Kennicutt here at TAMU (409
690-0095; fax 690-1252) sent me a notice concerning reference standards he
is marketing through the company CHIRON AS.  I have no experience with
them, but it says on the flyer that these standards were jointly developed
by Chevron Petroleum Technology Company, Finnigan-MAT, and CHIRON.  For
further information, contact:

CHIRON AS
Mahlon C. Kennicutt II
13161 HCM Circle Dr. 
College Station, TX 77845


>
>I've been following the discussion on standards with interest, GCIRMS presents
>its own unique set of problems in calibrating standards. We use internally
>calibrated high purity compounds that we use both as internal standards in real
>samples and as a measure of the external precision (by Simon's definition).
>There are still, to my knowledge, no international standards for this method
>though we, and I imagine many other labs, have run inter-lab experiments. 
>
>Iain
>
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>Iain Gilmour                                      Office: +44 (0) 190 865 5140
>Organic Geochemistry Laboratory                      Lab: +44 (0) 190 865 2158
>Department of Earth Sciences                         Fax: +44 (0) 190 865 5910
>The Open University
>Milton Keynes, MK7 6AA
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