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Drejtoria e Përgjithshme e Standardizimit

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ISO/WD 7990

Manganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

General information

Current stage: 20.98 Effective date: Jan 15, 1997

Originator: ISO

Owner: ISO/TC 65

Type: International Standard

Life cycle

PREVIOUSLY

Revises
ISO 7990:1985

NOW

ABANDON
ISO/WD 7990
20.98 Project deleted
Jan 15, 1997

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