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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

NF A22-405 ; NF ISO 7990:1986-12-01
Manganese ores and concentrates. Determination of total iron content. Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

Title (German)

MANGANERZE UND -KONZENTRATE. BESTIMMUNG DES GESAMTEN EISENS. TITRIMETRISCHES VERFAHREN NACH REDUKTION UND SPEKTRALPHOTOMETRISCHES VERFAHREN MIT SULFOSALIZYLSAUERE

Edition 1986-12-01

Original language French

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

NF A22-405 ; NF ISO 7990:1986-12-01 Manganese ores and concentrates. Determination of total iron content. Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

Want to learn more?

NF A22-405 ; NF ISO 7990:1986-12-01
Manganese ores and concentrates. Determination of total iron content. Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method