NEN-ISO 10727
Tea and instant tea in solid form - Determination of caffeine content - Method using high-performance liquid chromatography
active, Most Current
| Organization: | NEN |
| Publication Date: | 1 September 2002 |
| Status: | active |
| Page Count: | 18 |
| ICS Code (Tea): | 67.140.10 |
scope:
This International Standard specifies a method for the determination by high-performance liquid chromatography (HPLC) of the caffeine content of teas and instant teas. It is applicable to green tea, black tea and decaffeinated tea products.
Document History
NEN-ISO 10727
September 1, 2002
Tea and instant tea in solid form - Determination of caffeine content - Method using high-performance liquid chromatography
This International Standard specifies a method for the determination by high-performance liquid chromatography (HPLC) of the caffeine content of teas and instant teas. It is applicable to green tea,...
August 1, 1995
Tea and instant tea in solid form - Determination of caffeine content - Method using high-performance liquid chromatography
The method specified is based on extracting the caffeine from a test portion with water at 90°C in the presence of magnesium oxide, filtration followed by determination of the caffeine content by...