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ISO 3856-5:1984

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Peintures et vernis — Détermination de la teneur en métaux “solubles” — Partie 5: Détermination du chrome hexavalent contenu dans le pigment de la peinture liquide ou de la peinture en poudre — Méthode spectrophoto- métrique à la diphénylcarbazide

Published By Publication Date Number of Pages
ISO 1984-10 8
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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.

ISO 3856-5:1984
$13.00