ISO 14502-1:2005 Preview
Determination of substances characteristic of green and black tea -- Part 1: Content of total polyphenols in tea -- Colorimetric method using Folin-Ciocalteu reagent
This standard was last reviewed and confirmed in 2015. Therefore this version remains current.
ISO 14502-1:2005 specifies a method for the determination of the total polyphenol content of leaf teas and instant teas by a colorimetric assay using Folin-Ciocalteu phenol reagent. It is applicable to both green and black tea products.
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Revisions / Corrigenda
ISO 14502-1:2005/Cor 1:2006