Then it is filtered through 0.22μ membrane filter paper. one ml of this solution further diluted to 10ml to get a concentration of 20 μg/ml of ROS, 290μg/ml of FEN.20μl of this solution was
injected in to HPLC system and chromatograms were recorded. A duplicate injection of the standard solution was also injected into the HPLC system and the chromatograms were recorded. The amount of Rosuvastatin and Fenofibrate present in each tablet was calculated by comparing the peak area of the standard solution and sample. The amount of the drugs were calculated and tabulated in Table 1.