Spectrophotometric method development and validation for atorvastatin calcium and nifedipine HCl in bulk and tablet dosage form using absorption ratio method assay of atorvastatin and nifedipine

The linearity range was found to be 6-10 μg/ml. The proposed method was validated. The reports was expressed that the proposed method was found to be simple, precise, accurate and rapid for the simultaneous estimation of atorvastatin calcium and nifedipine HCl in bulk and tablet dosage form using absorption ratio method.