dear Natale,

BTW, did you ever make a chemical analysis of your capillaries?

I tried once, and as far as I remember, I remained with the terrible doubt that 
it was just bottle glass...

An alternative are CA (cellulose acetate) capillaries which really contain only 
first row elements and can easily be fabricated with very thin walls.

best

miguel



On 21 Apr 2008 at 16:09, Natale Perchiazzi wrote:

> 
> 
> Dear All,
> Anyone knows about capillaries giving a distinctly lower background than the 
> ones (borosilicate) 
> I presently use?  Your suggestions on materials and where to get them are 
> welcome. 
> 
> 
>         best regards       Natale Perchiazzi
> 
> 
> 
> 
> 
> Inviato da Yahoo! Mail.
> La casella di posta intelligente. 

--
Miguel Gregorkiewitz
Dip Scienze della Terra, Università
via Laterina 8, I-53100 Siena, Europe
fon +39'0577'233810 fax 233938
email [EMAIL PROTECTED]



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