Table 1.
Response surface test factor levels and coding.
| Code | ACC (mg/L) | Time (min) | Hydrosol concentration (%) |
|---|---|---|---|
| -1 | 20 | 5 | 1.5 |
| 0 | 25 | 7.5 | 2.3 |
| 1 | 30 | 10 | 3.5 |
ACC, available chlorine concentration.
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