The Regulation (EC) No. 1935/2004 of the European Parliament and of the Council of 27 October 2004 on materials and articles intended to come into contact with food is a legal framework to ensure safe materials (eg. gas cylinder regulators) are used in contact with food and gases used for food processing. In the United States, the Food and Drug Administration (FDA) require food additive gases and the related equipment to be Generally Recognized As Safe (GRAS).