IS 19219 : 2025/ISO 18447 : 2021 Tea - Determination of Theaflavins in Black Tea - Method Using High Performance Liquid Chromatography

NATIONAL FOREWORD

This Indian Standard which is identical to ISO 18447 : 2021 'Tea - Determination of theaflavins in black tea - Method using high performance liquid chromatography' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Stimulant Food Sectional Committee and approval of the Food and Agriculture Division Council.

The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'Indian Standard'; and

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.