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Willi - you are absolutely correct and I should have been specific - we and
others have had research grade compressed H2 gas "NEAR" -1000 permil, into
the -900's.  Pretty hard to find a HD peak at those levels. But apparently
Jonanthan's ref gas is around -100 so that isn't the problem anyway. Cheers,
Len

-----Original Message-----
From: Willi Brand [mailto:[log in to unmask]]
Sent: Tuesday, January 23, 2001 1:26 AM
To: [log in to unmask]
Subject: Re: [ISOGEOCHEM] HD problems on Finnegan delta plus


Dear all,
just a quick remark. Len, I have never seen hydrogen with a dD value
'lower than -1000 per mill'. In fact, such values cannot exit. (would be
< 0.0 at%).
Willi

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Willi A. Brand, Stable Isotope Laboratory       [log in to unmask]
Max-Planck-Institute for Biogeochemistry
Carl-Zeiss-Promenade 10, 07745 Jena, Germany    Tel   +49-3641-643718
P.O.Box 100164, 07701 Jena, Germany             Fax:  +49-3641-643710
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