Table 1 Predicted combination of factors as per central composite design
Run | X1 (% of Methanol) | X2 (Flow rate) | R1 (Retention time) | R2 (Theoretical plates) |
|---|---|---|---|---|
1 | 35 | 0.8 | 5.668 | 3700.34 |
2 | 35 | 1.2 | 4.11 | 2621.63 |
3 | 47.5 | 1.2 | 2.25 | 1674.26 |
4 | 47.5 | 1 | 2.9 | 2371.76 |
5 | 60 | 0.8 | 4.58 | 5632.22 |
6 | 60 | 1 | 3.38 | 4221.12 |
7 | 60 | 1.2 | 2.579 | 3272.73 |
8 | 47.5 | 1 | 3 | 2369.79 |
9 | 47.5 | 1 | 2.93 | 2400.86 |
10 | 35 | 1 | 4.88 | 3119.34 |
11 | 47.5 | 0.8 | 3.921 | 3330.04 |