NF ISO 7990

December 1986

Standard Current

Manganese ores and concentrates. Determination of total iron content. Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method.

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Main informations

National standards and national normative documents

December 1986

7 p.

NF ISO 7990

73.060.20 Manganese ores

A22-405

1 - 01/12/1986

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