China 'GB/T 12689.11-2004
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12689.11-2004
The methods for chemical analysis of zinc and zinc alloys--The determination of lanthanum and cerium contents--The tri-bromide arsenazo spectrophoto-metric method 锌及锌合金化学分析方法 镧、铈合量的测定 三溴偶氮胂分光光度法
Issued Date:2004-04-30
Implemented Date:2004-10-01
Issued by:
The Standardization Administration of the People's Republic of China