Status : Published (Under review)
This standard was last reviewed and confirmed in 2020. Therefore this version remains current.
Format Language
PDF
Paper
  • CHF124
Convert Swiss francs (CHF) to your currency

Abstract

ISO 14502-2:2005 specifies a high-performance liquid chromatographic (HPLC) method for the determination of the total catechin content of tea from the summation of the individual catechins. It is applicable to both leaf and instant green tea, and with precision limitations to black tea.

Gallic acid and caffeine can also be determined by this method, as can theogallin and theaflavins.

General information

  • Status
     : Published
    Publication date
     : 2005-03
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 23
  • Technical Committee :
    ISO/TC 34/SC 8
    ICS :
    67.140.10 
  • RSS updates
Standard first page

Read sample 

Preview this standard in our Online Browsing Plateform (OBP)

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

10
Reduced Inequalities
12
Responsible Consumption and Production

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

  2. Store
  3. Standards catalogue
  4. TC
  5. ISO/TC 34/SC 8
  6. ISO 14502-2:2005