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Levels of process factors employed in CCD.
| Factor | Levels |
||||
|---|---|---|---|---|---|
| -α | α | 0 | α | +α | |
| Impregnation Ratio (g/ml) | 1 | 2 | 3 | 4 | 5 |
| Activation Temperature (0C) | 200 | 400 | 600 | 800 | 1000 |
| Activation Time (minutes) | 30 | 60 | 90 | 120 | 150 |
| Activating Agent concentration (%) | 20 | 40 | 60 | 80 | 100 |
