Simultaneous Analysis of Losartan Potassium, Amlodipine Besylate, and Hydrochlorothiazide in Bulk and in Tablets by High-Performance Thin Layer Chromatography with UV-Absorption Densitometry

Table 2

Results from evaluation of precision.

Drug	Concentration (ng per spot)	Intraday precision (CV, %, 𝑛=3)	Interday precision; (CV, %, 𝑛=3)
Losartan potassium	1000	0.345	0.386
	2000	0.523	0.563
	3000	0.213	0.254
Amlodipine besylate	500	0.324	0.382
	1000	0.651	0.685
	1500	0.772	0.791
Hydrochlorothiazide	500	0.821	0.882
	1500	0.631	0.653
	2500	0.812	0.876