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ISO 3856-5:1984

Current Revision

Paints and varnishes - Determination of soluble metal content - Part 5 : Determination of hexavalent chromium content of the pigment portion of the liquid paint or the paint in powder form - Diphenylcarbazide spectrophotometric method

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 3856
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 35/SC 2/WG 10
Publish Date Document Id Type View
Not Available ISO 3856-5:1984 Revision