The Biodynamic Federation Demeter International is the largest certification organization for biodynamic agriculture, and is one of three predominant organic certifiers. Its name is a reference to Demeter, the Greek goddess of grain and fertility. It is a non-profit umbrella organisation with 46 members organisations in 36 countries around the world, representing both the global biodynamic movement and the Demeter certified biodynamic farms. The organization incorporates 19 certifying Demeter organizations, and the rest of the certification is done by the international certification committee. The Demeter Biodynamic Certification is used in over 65 countries to verify that biodynamic products meet international standards in production and processing. The Demeter symbol was introduced and registered as a trademark in 1928, and as such was the first ecological label for organically produced foods.