Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 20: Determination of minor amounts of fluorine and chlorine in rare earth oxides—Ion chromatography method
NORMA vydána dne 28.11.2024
Designation standards: GB/T 12690.20-2024
Publication date standards: 28.11.2024
Country: Chinese technical standard
Kategorie: Technické normy GB