Variable | Coded values for each variable of the PBD | ||
---|---|---|---|
−1 | 0 | 1 | |
Glycerol (ml/l) | 0.5 | 3.0 | 6.0 |
NaCl (g/l) | 10.0 | 30.0 | 50.0 |
Yeast extract (g/l) | 1.0 | 5.0 | 10.0 |
CaCl2 (g/l) | 0.0 | 1.0 | 2.0 |
Peptone (g/l) | 1.0 | 5.0 | 10.0 |
K2HPO4 (g/l) | 0.5 | 2.5 | 5.0 |
MgSO4 (g/l) | 0.0 | 0.25 | 0.5 |
pH | 5 | 7 | 9 |