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Experimental data of the absorbances relating to the precision of the system
| No |
Absorbance
|
|
|---|---|---|
|
Method with bromophenol
blue solution |
Method with thymol blue solution | |
| 1. | 0.6759 | 0.7028 |
| 2. | 0.6692 | 0.6999 |
| 3. | 0.6649 | 0.6983 |
| 4. | 0.6703 | 0.7058 |
| 5. | 0.6732 | 0.711 |
| 6. | 0.6697 | 0.7037 |
| Average | 0.6705 | 0.7035 |
| SD | 0.0037 | 0.0045 |
| % RSD | 0.5587 | 0.6420 |
