Table 2 Variables in 32 factorial design
Independent variable | Levels used | ||
|---|---|---|---|
− 1 | 0 | + 1 | |
X1: % Oil concentration | 15 | 18 | 21 |
X2: % Smix concentration | 47 | 54 | 61 |
Response: dependent variable | |||
 Y1 Globule size in nm | Minimum |  |  |
 Y2 Zeta potential in mV | Maximum |  |  |