This International Standard specifies a method for the determination of the total vitamin A (retinol) content of animal feeding stuffs and pet foods using high-performance liquid chromatography. The vitamin A content is the content of all-trans-retinyl alcohol and cis-isomers determined by the method described in this International Standard, and is expressed in International Units per kilogram (IU/kg).
BS EN ISO 14565:2001 history
2001BS EN ISO 14565:2001 Animal feeding stuffs. Determination of vitamin A content. Method using high-performance liquid chromatography