ISO 18447:2021

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

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.

Edition	2021
Published Date	2021
Published By	International Standardization Organisation
Page Count	19