Development and Validation of an HPLC Method for Simultaneous Assay of MCI and MI in Shampoos Containing Plant Extracts

Table 5

Results of system precision.

No. of injection	Retention time (minutes)	Peak area (mAu.s)	Asymmetry of peak	Number of theoretical plates	Resolution with nearest peak
MI
1	7.774	41045	1.4	3196	2.7
2	7.703	40758	1.4	3138	2.7
3	7.721	42103	1.4	3153	2.7
4	7.684	40356	1.4	3123	2.7
5	7.625	41573	1.4	3075	2.7
6	7.672	40952	1.4	3113	2.7
Average	7.696	41131	1.4	3133
RSD (%)	0.7	1.5	0.1	1.3
MCI
1	15.644	70761	1.1	4834	7.1
2	15.582	72623	1.1	4796	7.1
3	15.671	71658	1.1	4851	7.1
4	15.516	70216	1.1	4755	7.1
5	15.683	70458	1.1	4858	7.1
6	15.547	72054	1.1	4774	7.1
Average	15.607	71295	1.1	4812
RSD (%)	0.4	1.3	0.1	0.9