Reference number
ISO 10727:1995
© ISO 2025
ISO 10727:1995
Tea and instant tea in solid form — Determination of caffeine content — Method using high-performance liquid chromatography
Edition 1
1995-01
Withdrawn
Withdrawn (Edition 1, 1995)

Abstract

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).

General information

  • Status
     : Withdrawn
    Publication date
     : 1995-01
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 34/SC 8
    ICS :
    67.140.10 
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