生咖啡豆与咖啡饮料检测
DIN ISO 20481-2011咖啡和咖啡产品.用高性能液相色谱法(HPLC)测定咖啡因含量.参考方法(ISO 20481-2008)
This International Standard specifies a high performance liquid chromatography (HPLC) method for the caffeine content of: green coffee; roasted coffee; soluble coffee; regular and decaffeinated; and mixed instant coffee products (e. g. coffee/chicory mix or cappuccino-type coffee drink).The method has been tested on coffee products in ring tests. The preparation of the samples has been enlarged for the special coffee products.
