| Factor | Units | Levels |
| |
| −1 | 0 | 1 | ||
| CF | g/l | 10 | 25 | 40 |
| FF | g/l | 10 | 20 | 30 |
| Time | H | 24 | 48 | 72 |
| Temperature | ˚C | 30 | 33,5 | 37 |
| IS | % | 2 | 6 | 10 |