Development and Validation of Liquid Chromatographic Method for the Simultaneous Estimation of Ofloxacin and Ketorolac Tromethamine In Combined Dosage Form

An isocratic, reversed phase-HPLC method was developed and validated for the quantitative determination of Ofloxacin and Ketorolac Tromethamine in combined-dosage form. A thermo hypersil BDS C18 (250mmx4.6mm, particle size 5µm) column with mobile phase containing water (pH - 2.8 adjusted with ortho phosphoric acid) and methanol in the ratio of 60: 40, v/v was used. The flow rate was 1.0 mL/min, column temperature was 30°C and effluents were monitored at 241 nm. The retention times of ofloxacin and ketorolac tromethamine were 4.671min and 5.751 min respectively. The correlation co-efficient values for both the ofloxacin and Ketorolac tromethamine were found to be 1. The proposed method was validated with respect to linearity, accuracy, precision, specificity, and robustness. Recovery of ofloxacin and Ketorolac tromethamine in formulations was found to be 100% confirms the non-interferences of the excipients in the formulation. Due to its simplicity, rapidness and high precision, the method can be successfully applied to the estimation of Ofloxacin and Ketorolac tromethamine in combined dosage form.