Dear all,

I have to compare the english and german notations for analytical gases
(esp. oxygen or helium). Surprisingly, I could not get this information from
german companies.
Could anybody of you give me the german grade of purity (5.6 or 4.5) which
corresponds to the english cp-grade.

Many thanks in advance
        Andreas


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Andreas Lücke
Forschungszentrum Jülich
Institute for Chemistry und Dynamic of the Geosphere, ICG-4
Abt.: Isotopegeochemistry und Palaeoclimate

D-52425 Jülich

tel.: +49-(0)2461-61-4590
fax: +49-(0)2461-61-2484
e-mail: [log in to unmask]

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