Synopsis (short abstract)Both FAO and WHO are responsible for selecting experts, who are then included in a roster of experts, to serve on the Committee. FAO is responsible for selecting members with chemical expertise for the identity and the purity of food additives, for the assessment of residue levels of veterinary drugs and to assess the quality of monitoring data for contaminants. WHO takes responsibility for selecting members in order to establish acceptable daily intakes (ADIs) or to give a quantitative estimate of the health risk. The selected experts are appointed for a period of five years. The experts for each meeting are selected from the roster after a careful consideration of their scientific credentials and their expertise and experience with regard to the issues on the agenda. The experts are selected to participate in the meeting either as members or to assist the Secretariat with preparatory work before the meeting and in the latter case usually also participate in the meeting itself.