Methods for chemical analysis of iron ores The 1-(2-pyridylazo)-2-naphthol photometric method for the determination of zinc content
NORMA vydána dne 19.8.1986
Designation standards: GB/T 6730.44-1986
Note: NEPLATNÁ
Publication date standards: 19.8.1986
Country: Chinese technical standard
Kategorie: Technické normy GB