Fig. 4From: A unique revolutionary eco-friendly spectrophotometric technique for solving the spectral overlap in the determination of carvedilol and ivabradine in their binary combination: stability studyRatio spectra of 10.0 µg/ml of CAR (red line), IVA (black line) and their binary mixture (red dotted line), separately in distilled water, using spectrum of IVA (15.0 µg/ml) as a devisor showing the two selected wavelengths (252.6 and 275.0 nm)Back to article page