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  • Status :  Withdrawn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
  • Edition : 1
  • :
    ISO/TC 34/SC 8
  • 67.140.10

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