DIN ISO 14502-1:2007-11
綠茶和紅茶特征物質的測定 第1部分:茶中總多酚的含量 使用 Folin-Ciocalteu 試劑的比色法
Determination of substances characteristic of green and black tea - Part 1: Content of total polyphenols in tea - Colorimetric method using Folin-Ciocalteu reagent (ISO 14502-1:2005 + Corrigendum 1:2006)