Status : Published (Under review)
This standard was last reviewed and confirmed in 2023. Therefore this version remains current.
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Abstract

The document specifies the formula for the calculation. In this ratio, only sodium oxide and potassium oxide combined in the form of silicates is considered. Replaces ISO Recommendation R 1689-1970.

General information

  • Status
     : Published
    Publication date
     : 1976-02
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.060.50 
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