DETERMINATION OF 13 COMPONENTS IN OXIDATIVE HAIR DYES 331 (18) C. Sainthorant, Ph. Morin, M. Dreux, A. Baudry, and N. Goetz, Separation of phenylenediamine, phenol and aminophenol derivatives by micellar electrokinetic chromatography comparison of the role of anionic and cationic surfactants, J. Chromatogr. A, 717, 167–179 (1995). (19) C. E. Lin, Y. T. Chen, and T. Z. Wang, Separation of benzenediamines, benzenediols and aminophenols in oxidative hair dyes by micellar electrokinetic chromatography using cationic surfactants, J. Chro- matogr. A, 837, 241–252 (1999). (20) ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method.
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