Mandatory sensory and analytical testing for quality wines respectively. Pädikatsweine in Germany (for the two quality levels Wine and country wine this is not necessary). The official test number issued on label must be mentioned. From this, the inspection body, manufacturer and year of birth can be traced back without a doubt. The wine may not be changed from the beginning of the application until the end of the procedure and from the time of the grant. This ban, however, does not affect the necessary precautions for normal wine care. That includes that sulphurize, an addition of ascorbic acid and metatartaric as well as the filtration (not however beautiful ).