Mandatory sensory and analytical testing for quality wines or. Pädikatsweine in Germany (for the two quality levels Wine and country wine this is not necessary). As proof of the passed examination, the official test number will be awarded label must be mentioned. From this test site, manufacturer and year can be traced beyond doubt. The wine may not be changed from the beginning of the application until the end of the procedure and from the date of issue. However, this prohibition remains unaffected by necessary provisions for the usual wine care. These include that sulphurize, an addition of ascorbic acid and metatartaric as well as the filtration (not, however beautiful ).