Chromium ores and concentrates — Determination of silicon content — Molecular absorption spectrometric method and gravimetric method
NORMA vydaná dňa 1.11.1984
Označenie normy: ISO 5997:1984
Dátum vydania normy: 1.11.1984
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: 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.