The nutrient components and test levels for the central composite design.
Variable | Medium component | Ranges (g/l) and levels | ||||
---|---|---|---|---|---|---|
1.68 | 1 | 0 | -1 | -1.68 | ||
X1 | KCl | 3.68179 | 3 | 2 | 1 | 0.31821 |
X2 | Na2SO4 | 7.02269 | 6 | 4.5 | 3 | 1.97731 |
X3 | CaCl2 | 6.02269 | 5 | 3.5 | 2 | 0.97731 |