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Status : Active
Standard Type : Main
Document No : ISO 14502-1:2005
Document Year : 2005
Pages : 10
Edition : 1
Section Volume : Tea (ISO/TC 34/SC 8.)
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.