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Manganese ores — Determination of size distribution by sieving
90.93 Standard confirmed
Manganese ores and concentrates — Determination of calcium and magnesium contents — EDTA titrimetric method
90.93 Standard confirmed
Manganese ores and concentrates — Determination of titanium content — 4,4'-Diantipyrylmethane spectrometric method
90.93 Standard confirmed
Manganese ores and concentrates — Determination of calcium and magnesium contents — Flame atomic absorption spectrometric method
90.93 Standard confirmed
Manganese ores and concentrates — Determination of sodium and potassium contents — Flame atomic absorption spectrometric method
90.93 Standard confirmed
Manganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
90.93 Standard confirmed
Manganese and chromium ores — Experimental methods for checking the precision of sample division
90.93 Standard confirmed
Manganese and chromium ores — Experimental methods for checking the precision of moisture determination
90.93 Standard confirmed
Manganese and chromium ores — Experimental methods for checking the bias of sampling and sample preparation
90.93 Standard confirmed
Manganese and chromium ores — Experimental methods for evaluation of quality variation and methods for checking the precision of sampling
90.93 Standard confirmed
Manganese ores and concentrates — Determination of total iron content — 1,10-Phenanthroline spectrometric method
90.93 Standard confirmed
Manganese ores and concentrates — Determination of iron content — Flame atomic absorption spectrometric method
90.93 Standard confirmed