| Levels | |||||
Factors | 1 | 2 | 3 | 4 | 5 | 6 |
Concentration en soude (N) | 0.25 | 0.5 | 0.75 | 1 | 1.5 | 2 |
Temperature (˚C) | 80 | 100 | 120 |
|
|
|
Time (mn) | 60 | 120 | 180 |
|
|
|