
Cerium and cerium oxide--Determination of lanthanum oxide, praseodymium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--Emission spectrographic method
STANDARD published on 1.1.1990
Designation standards: GB/T 12690.3-1990
Note: WITHDRAWN
Publication date standards: 1.1.1990
Country: Chinese technical standard
Category: Technical standards GB