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ISO 9768:1994

Tea -- Determination of water extract

General information

Valid from 28.07.1994
ICS Groups
67.140.10 Tea
Directives or regulations
None

Standard history

Status
Date
Type
Name
11.06.1998
Corrigendum
ISO 9768:1994/Cor 1:1998
28.07.1994
Main
ISO 9768:1994
Main
ISO 9768:1990
The principle of the method specified is extraction of soluble matter from a test portion by boiling water under reflux, filtration, washing, drying and weighing of the hot-water-insoluble residue, calculation of the water extract.

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Standard monitoring
English (PDF 388 KB)

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Corrigendum

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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English