Dual Wavelength Spectrophotometric Method for Simultaneous Estimation of Atorvastatin Calcium and Felodipine from Tablet Dosage Form

Table 1

Absorbance values for calibration curves of FEL and ATR at 268 and 245 nm.

FEL			ATR
Concentration (μg/mL)	Absorbance		Concentration (μg/mL)	Absorbance
	268 nm	245 nm		268 nm	245 nm
20	0.17069	0.05085	2	0.12878	0.02782
40	0.33971	0.10072	4	0.24756	0.05264
60	0.52023	0.15256	6	0.37096	0.08296
80	0.68275	0.21401	8	0.50512	0.11161
100	0.84833	0.25425	10	0.62368	0.13909
—	—	—	12	0.76792	0.16704