
Methods for chemical analysis iron,steel and alloy The sulphochlorophenol S photometric method for the determination of niobium content
NORM herausgegeben am 26.9.1994
Designation standards: GB/T 223.39-1994
Note: UNGÜLTIG
Publication date standards: 26.9.1994
Country: Chinese technical standard
Kategorie: Technische Normen GB