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Physico-chemical properties of the test water.
| Characteristics | Unit | Mean | Range |
|---|---|---|---|
| Air temperature | °C | 26.20 | 25.6–26.6 |
| Water temperature | °C | 24.40 | 24.2–25.4 |
| pH | - | 7.6 | 7.4–7.9 |
| Dissolved oxygen | mg·L−1 | 6.8 | 6.7–7.8 |
| Conductivity | μMcm−1 | 282 | 260–300 |
| Total hardness | mg·L−1 | 220 | 200–230 |
