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.