Different Spectrophotometric Methods Manipulating Ratio Spectra Applied for the Analysis of Aclidinium in Duaklir^® Genuair^® Inhalation Powder

Figure 2

Zero-order absorption spectra of (20 µg/mL) aclidinium bromide (ــــــــــ) and (10 µg/mL) formoterol fumarate dehydrate (--------).