Abstract
Specifies a direct and a indirect method. Describes the principle, the reagents, the apparatus, the sampling, the test procedures, the expression of results, and the contents of the test report. This second edition cancels and replaces the first edition (1977).
General information
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Status: PublishedPublication date: 1991-12Stage: International Standard confirmed [90.93]
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Edition: 2Number of pages: 9
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Technical Committee :ISO/TC 126ICS :65.160
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Life cycle
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Previously
WithdrawnISO 3401:1977
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Now