ISO 3856-5:1984
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ISO 3856-5:1984
9430

Abstract

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The principle consists in formation of a coloured complex from hexavalent chromium and diphenylcarbazide solution. After addition of orthophosphoric acid and sulfuric acid, spectralphotometric easurement of the colour at a wavelength in the region of 540 nm. The method is applicable to coating materials having hexavalent chromium contents in the range of about 0,05 % (m/m) to 5 % (m/m). This method id the referee method in cases of dispute. This second edition cancels and replaces the ISO 3856/5-1980, of which it constitutes a through revision.


General information 

  •  : Published
     : 1984-10
  •  : 2
     : 3
  •  : ISO/TC 256 Pigments, dyestuffs and extenders
  •  :
    87.040 Paints and varnishes

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