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Subject:	Re: jumping ostracod shell in Kiel device
From:	"Heaton, Timothy HE" <[log in to unmask]>
Reply To:	Stable Isotope Geochemistry <[log in to unmask]>
Date:	Tue, 23 May 2006 17:06:32 +0100
Content-Type:	text/plain
Parts/Attachments:	text/plain (68 lines)

I'm not familiar with the Kiel setup, but we experienced problems with forams jumping out of the 'buckets' on the carousel of the VG Isocarb (though ostracod shells didn't). I presume this resulted from slight jiggling of the buckets as the carousel turns round. Yes, the solution was to crush them.

Tim H.E. Heaton

NERC Isotope Geosciences Laboratory 
British Geological Survey
Keyworth, Nottingham NG12 5GG, England
(www.bgs.ac.uk/nigl/index.htm)

Tel. +44(0)115 936 3401
Email: [log in to unmask]



-----Original Message-----
From: Stable Isotope Geochemistry [mailto:[log in to unmask]]On
Behalf Of Biel Obrador
Sent: 23 May 2006 13:22
To: [log in to unmask]
Subject: [ISOGEOCHEM] jumping ostracod shell in Kiel device


Dear subscribers

I am running single ostracod shells on a MAT252 with a Kiel device, and we found that some of the
valves were not completely dissolved. We realised that in such situation the shell, or part of it,
was on the top of the vial, so that it may have jumped probably due to a bubble during the reaction
with acid.

Has anyone of you found this problem before? Could you give any recommendation? 
One possible way to avoid such a jump would be crashing the shell. Some ideas on this or any other
thought?

Thanks in advance
Best wishes



-- 



Biel Obrador

Departament d'Ecologia
Facultat de Biologia
Universitat de Barcelona
Av Diagonal, 645
E-08028 Barcelona
SPAIN
Telf: +34 93 402 15 06
Fax:  +34 93 411 14 38

EMAIL: [log in to unmask]






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