International Organization for Standardization (ISO)
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ISO 549:1981
Scope
This International Standard specifies a gravimetric method for the determination of the combined water content of manganese ores.
This International Standard should be read in conjunction with ISO 4297.
ISO 549:1981 history
1981ISO 549:1981 Manganese ores; Determination of combined water content; Gravimetric method
1975ISO 549:1975 Title missing - Legacy paper document