Tea and instant tea in solid form. Determination of caffeine content. Method using high-performance liquid chromatography

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

21-08-2002

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Preparation of test sample
8 Procedure
9 Calculation
10 Precision
11 Test Report
Annex A (informative) - Results of interlaboratory test
Bibliography

Specifies a method for the determination by high-performance liquid chromatography (HPLC) of the caffeine content of teas and instant teas.

This International Standard specifies a method for the determination by high-performance liquid chromatography (HPLC) of the caffeine content of teas and instant teas. It is applicable to green tea, black tea and decaffeinated tea products.

Committee	AW/8
DevelopmentNote	Supersedes 00/712978 DC and BS 7820-1(1995). (09/2002)
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Current
Supersedes	BS 7820-1:1995 00/712978 DC : DRAFT SEPT 2000

Standards	Relationship
ISO 10727:2002	Identical

ISO 7516:1984	Instant tea in solid form Sampling
ISO 1839:1980	Tea — Sampling
ISO 7513:1990	Instant tea in solid form Determination of moisture content (loss in mass at 103 degrees C)
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 3696:1987	Water for analytical laboratory use — Specification and test methods
ISO 1572:1980	Tea Preparation of ground sample of known dry matter content

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BS ISO 10727:2002

Tea and instant tea in solid form. Determination of caffeine content. Method using high-performance liquid chromatography

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory