NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
HJ 826-2017
水質 陰離子表面活性劑的測定 流動注射-亞甲基藍分光光度法 Water quality-Determination of anionic surfactants -- Flow injection analysis(FIA) and methylene blue spectrophotometric method
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The Standardization Administration of the People's Republic of China