The methods of analysis shall be those adopted by the secretary of agriculture and natural resources, through rules promulgated pursuant to the provisions of chapter 1-26 , from published sources such as those of the association of official analytical chemists. Source: SL 1949, ch 85 , § 7; SDC Supp 1960, § 22.1707(3); SL 1986, ch 326 , § 31; SL 2021, ch 1 (Ex. Ord. 21-3 ), § 51, eff. Apr. 19, 2021.