Reference number
ISO 5994:1979
© ISO 2024
ISO 5994:1979
Sodium sulphate for industrial use — Determination of calcium content — Flame atomic absorption spectrometric method
Edition 1
1979-09
Withdrawn
Withdrawn (Edition 1, 1979)

Abstract

Specifies a method, the principle of which is based on acidification of a test portion with hydrochlorid acid, aspiration of the test solution into an acetylene-dinitrogen monoxide or acetylene-air-flame, and measurement of the absorption of the 422,7 nm line emitted by a calcium hollow-cathode lamp.

General information

  • Status
     : Withdrawn
    Publication date
     : 1979-09
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 4
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.060.50 
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