| Name of the component | Linearity (µg/mL) | Intercept | Slope | Correlation coefficient |
| Glycopyrrolate | 4 - 32 | 650 | 4670 | 1.000 |
| Methylparaben | 35 - 290 | 3460 | 8850 | 1.000 |
| Propylparaben | 4 - 32 | 205 | 7320 | 1.000 |