ISO 10727:1995

Tea and instant tea in solid form — Determination of caffeine content — Method using high-performance liquid chromatography

95.99 Withdrawal of Standard Aug 15, 2002

General information

Current stage: 95.99 Effective date: Aug 15, 2002

Originator: ISO

Owner: ISO/TC 34/SC 8

Type: International Standard

ICS: 67.140.10

Scope

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).

Life cycle

NOW

WITHDRAWN
ISO 10727:1995
95.99 Withdrawal of Standard
Aug 15, 2002

REVISED BY

PUBLISHED
ISO 10727:2002

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