ISO 5997:1984

Chromium ores and concentrates — Determination of silicon content — Molecular absorption spectrometric method and gravimetric method

Publication date: 1 nën 1984

General information

Current stage: 90.93 Effective date: 25 mar 2022

Originator: ISO

Owner: ISO/TC 132

Type: International Standard

ICS: 73.060.30

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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Scope

The molecular absorption spectrometric method (A) is applicable to products having silicon contents from 0,05 to 0,5 % (m/m), the gravimetric method (B) is applicable to products having silicon contents from 0,5 to 15 % (m/m). ISO 5997 should be read in conjunction with ISO 4297. Specifies among other things principle, reagents, apparatus, procedure, spectrometric measurement (method A only) and expression of results.

Life cycle

NOW

PUBLISHED
ISO 5997:1984
90.93 Standard confirmed
25 mar 2022

National adoptions

SSH ISO 5997:1984

DPS

Minerale dhe koncentrate kromi - Përcaktimi i përmbajtjes së silicit - Metoda spektrometrike e thithjes molekulare dhe metoda gravimetrike

60.60 Standard published

DPS/KT 133 më tepër