Enter the residual turbidity (NTU) and residual pH values from your lab results for each alum dosage and initial pH condition. Volumes are pre-calculated based on the formula: Volume (ml) = (Dosage mg/L × 500 ml) / 1000 mg/L.
| Alum Dosage (mg/L) | Volume of Alum (ml) | pH 6.5 | pH 7.0 | pH 7.5 | pH 8.0 | pH 8.5 | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Turbidity (NTU) | pH | Turbidity (NTU) | pH | Turbidity (NTU) | pH | Turbidity (NTU) | pH | Turbidity (NTU) | pH | ||
| 10 | 5 | ||||||||||
| 20 | 10 | ||||||||||
| 30 | 15 | ||||||||||
| 40 | 20 | ||||||||||
| 50 | 25 | ||||||||||
| 60 | 30 | ||||||||||