-----Ursprüngliche Nachricht-----
Von: R.A.JANI <[log in to unmask]>
An: [log in to unmask] <[log in to unmask]>
Datum: Mittwoch, 25. August 1999 11:13
Betreff: D/H:CATALYST-PT STICKS


>Dear Friends;
>
>We have a GEO20-20 Stable Isotope Ratio Mass Spectrometer supplied By PDZE
>Europa, U.K., alongwith WES, CAPS and Manifold.
>For analysis of D/H ratio in water samples, we use Pt sticks as Catalyst.
>I like to know the following points :
>(1) Is the sticks are reusable , for how long? ( One can use them how many
>times ).
>(2) What is the correct method for their reactivation ? Can you kindly
>send me any published paper/technical report regarding this. Please.
>(3) How one can identify the quality of Pt sticks ? Is there any change in
>look or any other physical method...
>
>Eagerly waiting for your valuable suggestions/reply.
>
>With regards,
>
>JANI
>
>---------------------------------------------------------------------------
---
>R.A. JANI
>OCE CS Group
>Earth Science & Solar System Division
>Physical Research Laboratory
>Navrangpura, AHMEDABAD 380 009
>Phone : (O) +91 (79) 6462129 Ext. 4261/4270 (R) 7503956
>FAX : +91(79) 6301502
>email : [log in to unmask]
>---------------------------------------------------------------------------
----
>

Dear Dr. Jani,

we have used the catalysator-sticks since 1994 and still use the old ones,
so we really do not know how long they last.

The company who is delivering the sticks say that you should not use waters
with mercurychloride (for desactivation of bacterial growth).

The sticks can be cleaned with water and aceton and can be dried at 110
degree celsius.


   For more information fax to the company:

                MS Analysentechnik

              Fax in Berlin ((0049-) 30 8226072)

             Regards

             Hans Friedrichsen