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The "German Agricultural Society" was founded in 1885 by Max Eyth (1836-1906). It is an organization of the German agricultural and food industry based in Frankfurt am Main and includes approximately 20,000 members. The nonprofit organization is funded through membership dues, their revenue for services and public grants. The primary objective of the DLG quality support for agriculture and food industries, as well as scientific and technical knowledge to make available practical and viable. The DLG center, more than 50 technical committees, working groups and committees with approximately 1,000 volunteer experts from academia and practice. In the "DLG Test Center Food" in Frankfurt am Main, foodstuffs such as bread, beer, wine and dairy products tested extensively and awarded quality products at the three levels bronze, silver or gold. The "DLG-test" signals to the consumer a very high quality of the product.
Since the year 1999 are also wineries and Winzergenossenschaft tested and the annual winners of the competitions with the coveted certificates "DLG Featured Winery" and "DLG Recommended wine cooperative" category. The certificate shall be given to companies that have in their production methods, facilities, and the presentation of their products "above-average quality, environment and customer focus" on all phases of production to marketing. The validity of the award is initially for 3 years. Thereafter, subject to annual checks whether the criteria are still met. The DLG via the Official test number on a voluntary basis by a special examination and awards with a positive result, a German wine label in three colors. Each year more than 15,000 wines and sparkling wines analyzed by sensors. See also Awards .