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ISO 18447:2021

Tea — Determination of theaflavins in black tea — Method using high performance liquid chromatography

General information
Valid from 10.06.2021
ICS Groups
67.140.10 Tea
Directives or regulations
None
Standard history
Status
Date
Type
Name
10.06.2021
Main
This document specifies a high performance liquid chromatography (HPLC) or ultra-high performance liquid chromatography (UHPLC) method for the determination of content of the four major theaflavins of tea. It is applicable to both leaf and instant black and oolong teas. The method is currently not validated for ready-to-drink (RTD) beverages.
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Standard monitoring