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

Figure 7

The zero-order absorption spectra of aclidinium (5–40 µg/mL) obtained by the proposed ratio subtraction method for the analysis of laboratory-prepared mixtures with formoterol (5–10 µg/mL) after multiplication by the divisor.