Mandatory sensory and analytical testing for quality wines and Prädikat wines in Austria (not required for table wine or regional wine ). As proof of passing the test, a state inspection number is issued, which must be stated on the label. The procedure was introduced in Austria in 1987 as one of the measures taken in response to the wine scandal uncovered in 1985, in which some producers had adulterated ordinary wines by illegally adding the antifreeze glycol to create supposedly high-quality wines with high residual sugar content.
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