Table 2 Validation results for alcoholic strength measured with infrared spectroscopy
Repeatability conditions (n = 5) | Within-laboratory reproducibility conditions (n = 5) | |||||||
|---|---|---|---|---|---|---|---|---|
Sample | Mean (% vol) | SD (% vol) | r (% vol) | RSD [%] | Mean (% vol) | SD (% vol) | R (% vol) | RSD [%] |
Wine 1a | 15.1 | 0.01 | 0.04 | 0.09 | 14.8 | 0.22 | 0.62 | 1.49 |
Wine 2 | 11.8 | 0.01 | 0.02 | 0.05 | 11.7 | 0.02 | 0.06 | 0.20 |
Wine 3 | 12.2 | 0.01 | 0.02 | 0.13 | 12.2 | 0.04 | 0.10 | 0.29 |
Wine 4 | 12.3 | 0.02 | 0.04 | 0.22 | 12.2 | 0.04 | 0.11 | 0.31 |
Wine 5 | 12.9 | 0.02 | 0.04 | 0.16 | 12.8 | 0.08 | 0.22 | 0.61 |
Wine 6a | 15.1 | 0.01 | 0.14 | 0.09 | 15.0 | 0.05 | 0.13 | 0.32 |
Beer 1b | 0.04 | 0.02 | 0.06 | 47.4 | 0.04 | 0.02 | 45.6 | 0.05 |
Beer 2 | 5.9 | 0.02 | 0.07 | 0.42 | 5.9 | 0.08 | 0.23 | 1.36 |
Beer 3 | 10.3 | 0.07 | 0.20 | 0.67 | 10.3 | 0.07 | 0.21 | 0.73 |
Fruit spirit | 35.4 | 0.33 | 0.93 | 0.94 | 35.3 | 0.38 | 1.08 | 1.09 |