| S.No. | Parameters | Selected values |
| 1 | Wave length λmax (nm) | 410 nm |
| 2 | Beer’s law limits (μg ml−1) | 100 - 35 |
| 3 | Molar absorptivity (L mol−1cm−1) | 0.86 × 103 |
| 4 | Regression equation | Y = 0.07666 + 0.00314C |
| 5 | Correlation coefficient (R2) | 0.966 |
| 6 | Standard deviation (S) | 0.00705 |
| 7 | LOD (μg/ml) | 7.4 |
| 8 | LOQ (μg/ml) | 22.4 |
| 9 | Time taken for maximum colour development | 10 min |
| 10 | Stability of the coloured product | More than 2 hrs |