Stability Indicating RP-HPLC Method for the Simultaneous Determination of Atorvastatin Calcium, Metformin Hydrochloride, and Glimepiride in Bulk and Combined Tablet Dosage Form

Table 5

Autosampler stability data of ATR, MET, and GLM.

Conc. in µg/mL	MET		ATR		GLM
	Mean ± SD	%RSD	Mean ± SD	%RSD	Mean ± SD	%RSD
10	—		100.38 ± 0.942	0.938	99.69 ± 1.05	1.054
20	101.29 ± 1.089	1.075	100.36 ± 0.71	0.707	100.86 ± 0.191	0.189
50	98.82 ± 0.649	0.657	98.56 ± 0.622	0.631	101.13 ± 0.237	0.234
100	99.94 ± 1.478	1.479	99.04 ± 0.667	0.674	100.27 ± 1.043	1.04