• Фильтр:

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Стандарт и/или проект Этап ТК
ISO 5975:1983
Chromium ores — Determination of calcium and magnesium contents — EDTA titrimetric method
90.93 ISO/TC 132
ISO 5997:1984
Chromium ores and concentrates — Determination of silicon content — Molecular absorption spectrometric method and gravimetric method
90.93 ISO/TC 132
ISO 6127:1981
Chromium ores — Determination of phosphorus content — Reduced molybdophosphate photometric method
90.93 ISO/TC 132
ISO 6129:1981
Chromium ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method
90.93 ISO/TC 132
ISO 6130:1985
Chromium ores — Determination of total iron content — Titrimetric method after reduction
90.93 ISO/TC 132
ISO 6153:1989
Chromium ores — Increment sampling
90.93 ISO/TC 132
ISO 6154:1989
Chromium ores — Preparation of samples
90.93 ISO/TC 132
ISO 6331:1983
Chromium ores and concentrates — Determination of chromium content — Titrimetric method
90.93 ISO/TC 132
ISO 6629:1981
Chromium ores and concentrates — Methods of chemical analysis — General instructions
90.93 ISO/TC 132
ISO 8889:1988
Chromium ores and concentrates — Determination of aluminium content — Complexometric method
90.93 ISO/TC 132

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