OS GSO ISO 619:2017
ISO 619:1981
Omani Standard
Current Edition
·
Approved on
03 October 2017
Manganese ores -- Determination of chromium content -- Diphenylcarbazide photometric method and silver persulphate titrimetric method
OS GSO ISO 619:2017 Files
English
4 Pages
Current Edition
Reference Language
20.57 OMR
OS GSO ISO 619:2017 Scope
This International Standard specifies two methods for the determination of chromium in manganese ores:
- Method I: diphenylcarbazide photometric method, which is applicable to manganese ores having chromium contents less than 0,1 % (m/m);
- Method II : silver persulphate titrimetric method, which is applicable to manganese ores having chromium contents greater than 0,1 % (m/m).
This International Standard should be read in conjunction with ISO 4297.
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