
Methods for chemical analysis of iron, steel and alloy--The tetraphenylarsonium chloride-thiocyanate-trichloromethane extraction photometric method for the determination of tungsten content
NORM herausgegeben am 1.1.1985
Designation standards: GB 223.44-1985
Note: UNGÜLTIG
Publication date standards: 1.1.1985
Country: Chinese technical standard
Kategorie: Technische Normen GB