Table 8.
Recovery values of the method in three consecutive days
| % RSD | % RSD | % RSD | ||||
|---|---|---|---|---|---|---|
| Method with bromophenol blue solution | Day 1 | 0.42 | Day 2 | 0.56 | Day 3 | 0.61 |
| Method with thymol blue solution | Day 1 | 0.57 | Day 2 | 0.65 | Day 3 | 0.59 |
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