Stability Indicating HPTLC Method for Analysis of Rifaximin in Pharmaceutical Formulations and an Application to Acidic Degradation Kinetic Study

Table 4

Recovery study for determination of rifaximin.

Recovery level (%)	Initial amount (ng/band)	Amount added (ng/band)	% recovery^a	SD	% RSD
50	1000	500	103.12	0.12	0.12
100	1000	1000	100.35	0.28	0.28
150	1000	1500	101.10	1.39	1.38

^a𝑛=3, average of three estimations at each level.