Research Article
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 | |
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