(1) Measures and procedures required to protect the health and life of animals and the people of this state.
(2) The laws of other states.
(3) The laws of the United States. The department’s rules shall conform in so far as practicable with, but shall not be more restrictive than, the laws and rules of the federal Food and Drug Administration.
(4) The opinions of recognized experts and governmental agencies in the field of food additives. [1961 c.637 §9; 1973 c.227 §20]