Normas ISO

Manganese ores -- Determination of sulphur content -- Barium sulphate gravimetric methods and sulphur dioxide titrimetric method after combustion

Manganese ores and concentrates -- Determination of arsenic content -- Spectrometric method

Manganese ores -- Determination of cobalt content -- Nitroso-R-salt photometric method

Manganese ores and concentrates -- Determination of nickel content -- Dimethylglyoxime spectrometric method and flame atomic absorption spectrometric method

Manganese ores -- Determination of carbon dioxide content -- Gravimetric method

Manganese ores -- Determination of active oxygen content, expressed as manganese dioxide -- Titrimetric method