YB/T 917-2017
Carbon materials—Determination of vanadium content—3,3-dimethyl naphthalene amine colorimetric method
GB/T 6730.34-2017(\u82f1\u6587\u7248)
铁矿石 锡含量的测定 邻苯二酚紫-溴化十六烷基三甲胺分光光度法
GB/T 6609.18-2004
Chemical analysis methods and determination of physical performanceof alumina--Determination of sulfate content--N,N-dimethyl-P-phenylenediamine spectrophotometric method
EN 1791:1997
EN 13435:2001
BS EN 13435:2002
Surface active agents. Determination of free amine content of alkyl dimethyl betaines
UNE-EN 13435:2002
Surface active agents - Determination of free amine content of alkyl dimethyl betaines.
GB/T 14457.8-1993
Isolate and synthetic aroma chemicals—Determination of tertiary content by acetyl chloride-dimethyl aniline method
\u0413\u041e\u0421\u0422 34790-2021
Prepared (corrected) water for the manufacturing of alcoholic beverages. Determination of the content of hydrogen sulfide and sulfides by photometric method with N,N-dimethyl-p-phenylenediamine
DIN EN 13435
Surface active agents - Determination of free amine content of alkyl dimethyl betaines; English version of DIN EN 13435