This standard was last reviewed and confirmed in 2020. Therefore this version remains current.
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.
Status: PublishedPublication date: 2005-03
Edition: 1Number of pages: 23
Technical Committee: ISO/TC 34/SC 8 Tea
- ICS :
- 67.140.10 Tea
This standard contributes to the following Sustainable Development Goals:
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|std 1 124|
|std 2 124||Paper|
A standard is reviewed every 5 years
Stage: 90.93 (Confirmed)
Corrigenda / AmendmentsPublished
ISO 14502-2:2005/Cor 1:2006
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