Table 2.
System suitability and validation data for the estimation of RC from hair tonic preparation.
| Parameters | Resorcinol |
|---|---|
| System suitability | |
| Retention time (min) | 3.78 ± 0.01 |
| Capacity factor | 1.54 |
| Resolution | 3.04 |
| USP tailing factor | 1.12 |
| USP theoretical plates (N) | 6665.80 |
| Sensitivity | |
| Limit of detection (LOD) (μg·mL−1) | 0.63 |
| Limit of quantitation (LOQ) (μg·mL−1) | 1.92 |
| Precision | |
| Intra-day | |
| Repeatability (mg/100 mL) (n = 5) ± %RSD | 45.80 ± 0.09 |
| Inter-day | |
| Mean resorcinol content from hair tonic preparation (mg/100 mL) (day 1/day 2/day 3) (n = 3) | 45.68/45.41/45.08 |
| (%RSD) (day 1/day 2/day 3) (n = 3) | 0.01/0.08/0.02 |