Dear Pier,

working in an isotope laboratory in the Eastern part of Germany only from
1992 I know that Rasotherm is a borosilicate glass and was used in most of
the vacuum lines. Now we use for this purpose SCHOTT glass.

Marion Tichomirowa
TU Bergakademie Freiberg
Institute of Mineralogy
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>Dear all,
>
>This time a question from me.
>In literature a number of different glass types are reported. It concerns
>some names probably originating from the former eastern European producers?
>Names such as: Rasotherm, Uviol-glass, or Supremax (last one used by Fiedler
>and Proksch, 1972) were used. Can anyone explain to me what types of glass
>these are? Borosilicates, silicate glass, .... and what is a comparable
>quality in common glass types.
>
>I hope to get a fast answer - I will move soon from this address and I will
>not be able to look into e-mail as regular as I am used to for the comming
>month.
>
>Best wishes,
>Pier.
>
>****
>Address: see my next message to the list!!!
>****
>
>