Glossary of technical terms

  • D.O. : Abbreviation for Degree of Obscuration – Difference between real A.S.V. real and gross A.S.V.
  • ABV or A.S.V. : Abbreviation for  Alcoholic Stengh by Volume.
  • Gross A.S.V. : corresponds to the measurement of the A.S.V. directly in the spirit without distillation. It is correlated to the density and measurable only if the density is less than 1000 g/l. It must be expressed in % vol. at 20°C.
  • Real A.S.V. : According to the Compendium of International Methods of Spirit Drinks, “The Alcoholic Volume Volume of spirit drinks is equal to the number of liters of ethyl alcohol contained in 100 liters of hydroalcoholic mixture having the same density as the spirit drink after distillation “.
    It must be expressed in % vol. at 20°C.
  • Expanded Uncertainty: Expanded uncertainty represents a range around the analytical result within which the true value of the measured parameter is highly likely to lie.
    It is generally calculated by multiplying the standard uncertainty (which reflects the variability of the measurements) by a coverage factor, often equal to 2 for a 95% confidence level.
    Example: A result of 40.1% vol. ± 0.2% vol. (expanded uncertainty) means that there is a 95% probability that the true value lies between 39.9% and 40.3% vol.