Figure 4From: Application of smart spectrophotometric methods and artificial neural network for the simultaneous quantitation of olmesartan medoxamil, amlodipine besylate and hydrochlorothiazide in their combined pharmaceutical dosage form Zero order absorption spectra of 20 μg mL -1 OLM, 20 μg mL -1 HCT and a mixture of 10 μg mL -1 OLM with 10 μg mL -1 HCT showing isoabsorptive point at 260.5 nm using acetonitrile as blank. Back to article page