发布时间:2024-05-27 17:49:26 - 更新时间:2024年06月29日 15:22
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Coffee. Determination of caffeine content.
Spectrometric method applicable to green, roasted and de-caffeinated coffees, also to dried and liquid extracts
Methods of test for coffee and coffee products - Coffee: determination of caffeine content (reference method)
Coffee. Determination of caffeine content. Method using high-performance liquid chromagraphy.
本标准规定了用高效液相色谱法、紫外分光光度法对茶叶中咖啡碱测定的原理、仪器和用具、试剂和溶液、操作方法及结果计算方法。 + 本标准适用于茶叶中咖啡碱的测定
Tea--Determination of caffeine content
The document specifies a rapid method for determination of the coffein content of coffee using HPLC. With the new edition the scope of the document
Analysis of coffee and coffee products - Determination of coffeine content - Part 2: HPLC rapid method
本标准规定了用高效液相色谱法、紫外分光光度法测定茶叶中咖啡碱的仪器和用具、试剂和溶液、操作方法及结果计算的方法。本标准适用于茶叶中咖啡碱的测定,也适用于固态速溶茶咖啡碱的测定
Tea.Determination of caffeine content
Method for the determination of caffeine in tea for import and export
The method consists in extracting of the caffeine from a test portion, in an ammoniacal medium, successive purifying, with diethyl ether, on two
Coffee; Determination of caffeine content (Reference method)
This International Standard specifies a method for the determination by high-performance liquid chromatography (HPLC) of the caffeine content of teas
Tea and instant tea in solid form - Determination of caffeine content - Method using high-performance liquid chromatography
本标准适用于茶叶中咖啡碱的测定。在茶叶水浸出物中除去叶蛋白、茶多酚等物质后,留下的生物碱其测定波长为274nm者,均称茶叶咖啡碱
이 규격은 커피의 함량 측정 기준법에 대하여 규정한다. 이 방법은 커피 원두, 볶은 커피
Coffee-Determination of caffeine content(Reference method)
Coffee. Determination of caffeine content.
Spectrometric method applicable to green, roasted and de-caffeinated coffees, also to dried and liquid extracts
Methods of test for coffee and coffee products - Coffee: determination of caffeine content (reference method)
Coffee. Determination of caffeine content. Method using high-performance liquid chromagraphy.
本标准规定了用高效液相色谱法、紫外分光光度法对茶叶中咖啡碱测定的原理、仪器和用具、试剂和溶液、操作方法及结果计算方法。 + 本标准适用于茶叶中咖啡碱的测定
Tea--Determination of caffeine content
The document specifies a rapid method for determination of the coffein content of coffee using HPLC. With the new edition the scope of the document
Analysis of coffee and coffee products - Determination of coffeine content - Part 2: HPLC rapid method
本标准规定了用高效液相色谱法、紫外分光光度法测定茶叶中咖啡碱的仪器和用具、试剂和溶液、操作方法及结果计算的方法。本标准适用于茶叶中咖啡碱的测定,也适用于固态速溶茶咖啡碱的测定
Tea.Determination of caffeine content
This International Standard specifies a method for the determination by high-performance liquid chromatography (HPLC) of the caffeine content of teas
Tea and instant tea in solid form - Determination of caffeine content - Method using high-performance liquid chromatography
이 규격은 커피의 함량 측정 기준법에 대하여 규정한다. 이 방법은 커피 원두, 볶은 커피
Coffee-Determination of caffeine content(Reference method)
Method for the determination of caffeine in tea for import and export
The method consists in extracting of the caffeine from a test portion, in an ammoniacal medium, successive purifying, with diethyl ether, on two
Coffee; Determination of caffeine content (Reference method)
本标准适用于茶叶中咖啡碱的测定。在茶叶水浸出物中除去叶蛋白、茶多酚等物质后,留下的生物碱其测定波长为274nm者,均称茶叶咖啡碱