China 'GB/T 34176-2017
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 34176-2017
Chemical analysis methods for determination of Fe2+ and Fe3+ in refractory products by the spectral photometric method with 1,10-phenanthroline 邻二氮杂菲分光光度法测定耐火材料中的二价和三价铁离子化学分析方法
Issued Date:2017-09-07
Implemented Date:2018-08-01
Issued by:
The Standardization Administration of the People's Republic of China