ISO 3119:1976
w
ISO 3119:1976
8276

Abstract 

Alkaline fusion of a test portion by sodium carbonate and subsequent neutralization by sulphuric acid. Measurement of the absorption of the complex formed by chromium and diphenylcarbazide at a wavelength of abour 540 nm after adding sodium azide for elimination of the colour caused by manganese.


General information 

  •  :  Withdrawn
     : 1976-04
  •  : 1
     : 3
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.01 Inorganic chemicals in general

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