Fig. 3From: Classical versus chemometrics tools for spectrophotometric determination of fluocinolone acetonide, ciprofloxacin HCl and ciprofloxacin impurity-A in their ternary mixtureDouble divisor ratio spectra derivative (DDRD) of 0.6–20.0 μg/mL FLU using 10.0 μg/mL CIP + 10.0 μg/mL CIP imp-A as double divisorBack to article page