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

NORMA vydaná dňa 17.6.1998

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The information about the standard:

Designation standards: GB/T 17415.2-1998
Note: NEPLATNÁ
Publication date standards: 17.6.1998
Country: Chinese technical standard
Kategória: Technické normy GB