Hi Myles,

We use bottles with a round bottom supplied by Fisher Scientific, works
well with small amounts (from 0.03mg). Also they are made from Pyrex,
which gives no reaction of the glass with the acid. Sorry, i have no
order number at hand, since Finnigan handed them to me. The order number
they told me i can not locate in the catalogues od FS. But should you be
lucky, please tell me

Alexander Duhr
Leibniz-Labor
Max-Eyth-Str.11
24118 Kiel
germany


M Stocki wrote:
>
> Hi everyone,
>
> Our lab is beginning the automated analysis of carbonates using a Finnigan
> Mat Gas Bench coupled to a Delta Plus. Our present difficulty is in getting
> the small amount of acid dispensed into the vacutainers to meet with the
> small amount of carbonate (0.5 mg) located on the flat bottom of the
> vacutainer. I have heard that there is such a thing as miniature
> lightweight disposable "cones" available for this purpose. The carbonates
> are weighed directly into this lightweight cone on a balance. Then this
> cone with carbonate in the bottom of it is fitted inside the flat bottomed
> vacutainer. This supposedly enables the small drop of acid dropped into the
> vacutainer to meet with all of the small amount of carbonate. If you know
> of a supplier of such a thing as this please let me know.
>
> Thank you,
>
> Myles Stocki
> University of Saskatchewan