International Organization for Standardization (ISO)
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ISO 6233:1983
Scope
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.
ISO 6233:1983 history
1983ISO 6233:1983 Manganese ores and concentrates; Determination of calcium and magnesium contents; EDTA titrimetric method