Table 3.
Matrix of the central composite design (CCD).
| Treatment runs | Blocks | PEG molecular mass (g·mol−1) | TLL [% (w w−1)] | NaCl [% (w·w−1)] | pH |
|---|---|---|---|---|---|
| 1 | 1 | 8000 | 17.20 | 11.5 | 7.5 |
| 2 | 1 | 8000 | 17.20 | −2.5 | 7.5 |
| 3 | 1 | 8000 | 17.20 | 4.5 | 4.5 |
| 4 | 1 | 8000 | −3.42 | 4.5 | 7.5 |
| 5 | 1 | 8000 | 35.27 | 4.5 | 7.5 |
| 6 c | 1 | 8000 | 17.20 | 4.5 | 7.5 |
| 7 | 1 | 12,000 | 17.20 | 4.5 | 7.5 |
| 8 | 1 | 8000 | 17.20 | 4.5 | 7.5 |
| 9 | 1 | 8000 | 17.20 | 4.5 | 10.5 |
| 10 c | 1 | 4000 | 17.20 | 4.5 | 7.5 |
| 11 | 2 | 10,000 | 6.25 | 1.0 | 6.0 |
| 12 | 2 | 6000 | 6.25 | 8.0 | 6.0 |
| 13 | 2 | 10,000 | 25.60 | 8.0 | 6.0 |
| 14 | 2 | 6000 | 25.60 | 1.0 | 6.0 |
| 15 c | 2 | 10,000 | 25.60 | 1.0 | 9.0 |
| 16 | 2 | 8000 | 17.20 | 4.5 | 7.5 |
| 17 | 2 | 8000 | 17.20 | 4.5 | 7.5 |
| 18 | 2 | 6000 | 6.25 | 1.0 | 9.0 |
| 19 | 2 | 6000 | 25.60 | 8.0 | 9.0 |
| 20 c | 2 | 10,000 | 6.25 | 8.0 | 9.0 |
| 21 | 3 | 8000 | 17.20 | 4.5 | 7.5 |
| 22 | 3 | 10,000 | 25.60 | 1.0 | 6.0 |
| 23 | 3 | 10,000 | 6.25 | 1.0 | 9.0 |
| 24 | 3 | 6000 | 6.25 | 8.0 | 9.0 |
| 25 | 3 | 6000 | 6.25 | 1.0 | 6.0 |
| 26 | 3 | 8000 | 17.20 | 4.5 | 7.5 |
| 27 | 3 | 10,000 | 25.60 | 8.0 | 9.0 |
| 28 c | 3 | 6000 | 25.60 | 1.0 | 9.0 |
| 29 | 3 | 10,000 | 6.25 | 8.0 | 6.0 |
| 30 c | 3 | 6000 | 25.6 | 8.0 | 6.0 |
c
center poin.