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 consists in extracting of a test portion with hot water, precipitating of proteins and filtrating. Reduction of the extracted nitrates into nitrites by metallic cadmium. Formation of a red colouration by adding of sulfanilamide and nphthyl ethylenediamine hydrochloride and photometric measurement at a wavelength of 538 nm.

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General information

  • Status
     : Published
    Publication date
     : 1975-09
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 5
  • Technical Committee :
    ISO/TC 34/SC 6
    ICS :
    67.120.10 
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