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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]

ISO 4139
Ferrosilicon; determination of aluminium content; Flame atomic absorption spectrometric method

Title (German)

Ferrosilicium; Bestimmung des Aluminiumgehalts; spektrophotometrische Flammen-Atomabsorptionsmethode

Responsible national committee

NA 066-02-06 AA - Methods of analysis

Responsible international committee

ISO/TC 132 - Ferroalloys

Edition 1979-05

Original language English

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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

ISO 4139 Ferrosilicon; determination of aluminium content; Flame atomic absorption spectrometric method

Responsible national committee

Responsible international committee

Jörg Graßmann

Want to learn more?

ISO 4139
Ferrosilicon; determination of aluminium content; Flame atomic absorption spectrometric method