Standard [CURRENT]
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This document specifies a test method for determining the mass fractions of 34 elements in the extreme trace range in ultrapure water, using inductively coupled plasma mass spectrometry (ICP-MS) as the determination method. The method applies to elemental trace mass fractions from 10 ng/kg to 1 000 ng/kg. This document has been prepared by Working Committee NA 062-02-21 AA "Prüfung von Prozesschemikalien für die Halbleitertechnologie" ("Testing of process materials for semiconductor technology") at DIN Standards Committee Materials Testing (NMP).
This document replaces DIN 50451-4:2007-02 .