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ISO 4298:2022
International Standard
Manganese ores and concentrates — Determination of manganese content — Potentiometric method
GSO ISO 9681:2017
ISO 9681:1990
Gulf Standard
Manganese ores and concentrates -- Determination of iron content -- Flame atomic absorption spectrometric method
GSO ISO 5889:2017
ISO 5889:1983
Gulf Standard
Manganese ores and concentrates -- Determination of aluminium, copper, lead and zinc contents -- Flame atomic absorption spectrometric method
OS GSO ISO 7990:2017
Omani Standard
Manganese ores and concentrates -- Determination of total iron content -- Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
OS GSO ISO 8530:2017
Omani Standard
Manganese and chromium ores -- Experimental methods for checking the precision of sample division
OS GSO ISO 9681:2017
Omani Standard
Manganese ores and concentrates -- Determination of iron content -- Flame atomic absorption spectrometric method
GSO ISO 8530:2017
ISO 8530:1986
Gulf Standard
Manganese and chromium ores -- Experimental methods for checking the precision of sample division
GSO ISO 8542:2017
ISO 8542:1986
Gulf Standard
Manganese and chromium ores -- Experimental methods for evaluation of quality variation and methods for checking the precision of sampling
GSO ISO 8541:2017
ISO 8541:1986
Gulf Standard
Manganese and chromium ores -- Experimental methods for checking the bias of sampling and sample preparation
OS GSO ISO 8531:2017
Omani Standard
Manganese and chromium ores -- Experimental methods for checking the precision of moisture determination
OS GSO ISO 8541:2017
Omani Standard
Manganese and chromium ores -- Experimental methods for checking the bias of sampling and sample preparation
OS GSO ISO 8542:2017
Omani Standard
Manganese and chromium ores -- Experimental methods for evaluation of quality variation and methods for checking the precision of sampling