Status : Published (Under review)

This standard was last reviewed and confirmed in 2024. Therefore this version remains current.
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Abstract

The method is principle to coating materials having lead contents in the range of about 0,01 % (m/m) to 2 % (m/m), may also be applicable to products with a total lead content of more than 2 % (m/m) when the requirements of precision does not exceed the specified values. two methods are given. The principle of the dry ashing method consists in evaporation of a test portion to dryness and ashing at 475 C and extraction of any lead in the residue with hydrochloric acid; that of the wet oxidation method consists in wet oxidation of a test portion with a mixture of sulfuric acid and hydrogen peroxide or with sulfuric acid and nitric acid and extraction of any lead in the residue with EDTA and ammonia solution.

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General information

  • Status
     : Published
    Publication date
     : 1984-10
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 256
    ICS :
    87.040 
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