Parameter Condition Mean peak area ± SD (% RSD) % Assay Theoretical plates
Rosuvastatin
Flow rate (ml/min) 0.9 3557208.67 ± 8898.09 (0.25) 99.85  
1.0 8134
1.1  
Detection wavelength (nm) 252 3551673.00 ± 16076 (0.45) 99.69  
254 8530
256  
Mobile phase composition (v/v) 34:66 3532385.67 ± 26472.49 (0.75) 99.15  
32:68 8457
30:70  
pH 3.3 3551673.67 ± 38794 (1.09) 99.69  
3.4 8265
3.5  
Ezetimibe
Flow rate (ml/min) 0.9 4346140.00 ± 8730.76 (0.20) 99.78  
1.0 10986
1.1  
Detection wavelength (nm) 252 4359196.67 ± 11949.63 (0.27) 100.08  
254 10859
256  
Mobile phase composition (v/v) 34:66 4318080.67 ± 36416.96 (0.84) 99.13  
32:68 10945
30:70  
pH 3.3 4325117.33 ± 30964.03 (0.72) 99.30  
3.4 10674
3.5  
Table 5: Robustness Studies of Rosuvastatin and Ezetimibe.
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