ISO 6233:1983 Preview
Manganese ores and concentrates -- Determination of calcium and magnesium contents -- EDTA titrimetric method
This standard was last reviewed and confirmed in 2016. Therefore this version remains current.
The method is applicable to products having calcium and magnesium contents greater than 0,3 % (m/m). Should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, sample, procedure and expression of results.