From: Simple spectrophotometric methods for the determination of amlodipine and atorvastatin in bulk and tablets
Parameter
Multiwavelength regression method
Absorbance factor method
Amlodipine (n = 6)
% LC (RSD%)
99.34 (0.55)
98.63 (0.43)
Atorvastatin (n = 6)
100.47 (0.61)
99.70 (0.34)
t test
Calculated t value
AML
0.91
AVS
1.13
t tabulated
2.23