DIN ISO 14502-2:2007
绿茶和红茶的物质特征的测定.第2部分:绿茶中儿茶酚含量.高效液相色谱法
Determination of substances characteristic of green and black tea - Part 2: Content of catechins in green tea - Method using high-performance liquid chromatography (ISO 14502-2:2005 + Corrigendum 1:2006)