ISO 5520:1981
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ISO 5520:1981
11574

Status : Published (Under review)

This standard was last reviewed and confirmed in 2018. Therefore this version remains current.
en
Format Language
std 1 42 PDF
std 2 42 Paper
  • CHF42
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Abstract

After incineration of the product at 525 +/- 25 degrees centigrade the method consists in a) in the case of total ash: addition of an excess of standard volumetric sulphuric acid solution and back titration with standard volumetric sodium hydroxide solution, b) in the case of water-soluble ash: extraction of the ash with hot water and neutralization of the aqueous extract with standard volumetric sulphuric acid solution.

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General information

  •  : Published
     : 1981-08
    : International Standard under systematic review [90.20]
  •  : 1
     : 3
  • ISO/TC 34/SC 3
    67.080.01 
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