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Table 2 Validation results for alcoholic strength measured with infrared spectroscopy

From: Rapid and mobile determination of alcoholic strength in wine, beer and spirits using a flow-through infrared sensor

  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
  1. a Dessert/liqueur wines with increased alcoholic strength
  2. b Alcohol-free beer