Table 5. Variables and the three levels.
| Independent variable | Low level (−1) | High level (+1) |
|---|---|---|
| A= CS Conc. (mg) | 100 | 200 |
| B= TPP Conc. (%) | 0.5 | 0.75 |
| C=Tween 80 Conc. (%) | 0.5 | 1 |
| Dependent Variables | ||
| Y1= EE | ||
| Y2=Particle size |
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