95.99 Withdrawal of Standard Aug 15, 2002
ISO
ISO/TC 34/SC 8 Tea
International Standard
67.140.10 Tea
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 HPLC with UV detection. Applies to teas and instant teas with a caffeine content of greater than 0,3 % (m/m).
WITHDRAWN
ISO 10727:1995
95.99
Withdrawal of Standard
Aug 15, 2002
PUBLISHED
ISO 10727:2002