中華人民共和國國家標準
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 5686.4-2022
Ferromanganese, manganese silicon alloy, ferromanganese nitride and metal manganese Determination of phosphorus content Molybdenum blue spectrophotometry and bismuth phosphorus molybdenum blue spectrophotometry 錳鐵、錳矽合金、氮化錳鐵和金屬錳 磷含量的測定 钼藍分光光度法和铋磷钼藍分光光度法
Issued Date:2022/10/14
Implemented Date:2023/2/1
Issued by:
The Standardization Administration of the People's Republic of China