GB/T 12690.1

GB/T 12690.1, Total:4 items.

The international standard classification for "GB/T 12690.1" includes: Other non-ferrous metals and their alloys , Cadmium, cobalt and their alloys .

The Chinese standard classification for "GB/T 12690.1" includes: Rare metals and their alloys analysis method , Rare metals and their alloys .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 12690.1-2015 Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides―Part 1:Determination of carbon and sulfur contents―High frequency-infrared absorption method
GB/T 12690.1-1990 Lanthanum oxide--Determination of cerium oxide, praseodymium oxide, nedeodynium oxide, samarium oxide and yttrium oxide--Induetively coupled plasma atomic emission spectrographic method
GB/T 12690.1-2022 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 1：Determination of carbon and sulfur contents—High frequency-infrared absorption method
GB/T 12690.1-2002 Chemical analysis methods for non-RE impurity of rare earth metals and their oxides-Determination of carbon and sulfur contents-High frequency-infrared absorptoin method