ISO 5997:1984
Chromium ores and concentrates; Determination of silicon content; Molecular absorption spectrometric method and gravimetric method

Standard No.

ISO 5997:1984

Release Date

1984

Published By

International Organization for Standardization (ISO)

Latest

ISO 5997:1984

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.

ISO 5997:1984 history

• 1984 ISO 5997:1984 Chromium ores and concentrates; Determination of silicon content; Molecular absorption spectrometric method and gravimetric method