Fig. 6From: Simultaneous determination of cetirizine, phenyl propanolamine and nimesulide using third derivative spectrophotometry and high performance liquid chromatography in pharmaceutical preparationsThird order derivative absorption spectra of: (a–e) NMS (20, 30, 40, 50 and 80 µg/mL), (f) CTZ (20 µg/mL), (g) PPA (20 µg/mL)Back to article page