GB/T 17415.2-1998

Methods for chemical analysis of Tantalum and Niobium ores—Determination of Niobium content—Preconcentration and separation with silica gel—Thiocyanate extraction photometric method

NORM herausgegeben am 17.6.1998

The information about the standard:

Designation standards: GB/T 17415.2-1998
Note: UNGÜLTIG
Publication date standards: 17.6.1998
Country: Chinese technical standard
Kategorie: Technische Normen GB