Animal feeding stuffs: Methods of sampling and analysis - Determination of vitamin A, E and D content - Method using solid phase extraction (SPE) clean-up and high-performance liquid chromatography (HPLC)
动物饲料:取样和分析方法——维生素A、E和D含量的测定——使用固相萃取(SPE)净化和高效液相色谱(HPLC)的方法;德文版EN 17547:2021