This standard was last reviewed and confirmed in 2023. Therefore this version remains current.
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.
Status: PublishedPublication date: 1984-10
Edition: 2Number of pages: 3
Technical Committee: ISO/TC 256 Pigments, dyestuffs and extenders
- ICS :
- 87.040 Paints and varnishes
Buy this standard
|std 1 40|
|std 2 40||Paper|
A standard is reviewed every 5 years
Stage: 90.93 (Confirmed)
Got a question?
Check out our FAQs
+41 22 749 08 88
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.