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| independent variable | unit | level |
||
|---|---|---|---|---|
| –1 | 0 | 1 | ||
| A: concentration of H2SO4 | g/L | 0.00 | 15.00 | 30.00 |
| B: reaction temperature | °C | 30.00 | 60.00 | 90.00 |
| C: reaction time | min | 10.00 | 35.00 | 60.00 |
| D: n(glu)/n(V) | 0.00 | 1.50 | 3.00 | |
