1、ICS 67.140.10Tea and instant tea in solid formDetermination of caffeine content Method usinghigh-performance liquid chromatography(ISO 10727 : 2002)Tee und fester Tee-Extrakt Bestimmung des Coffeingehaltes Verfahren mit Hochleistungsflssigchromatographie(ISO 10727 : 2002)This standard incorporates I
2、nternational StandardISO 10727 Tea and instant tea in solid form Determination of caffeine content Method using high-performance liquid chromatography.A comma is used as the decimal marker.National forewordThis standard has been prepared by ISO/TC 34 Food products, SC 8 Tea.The responsible German bo
3、dy involved in its preparation was the Normenausschuss Lebensmittel undlandwirtschaftliche Produkte (Foodstuffs and Agricultural Products Standards Committee), Technical Com-mittee Tee.The DIN Standards corresponding to the International Standards referred to in clause 2 and in the bibliog-raphy of
4、the ISO Standard are as follows:ISO 1572 DIN 10806ISO 3696 DIN ISO 3696ISO 5725-2 DIN ISO 5725-2DEUTSCHE NORM May 2004DIN ISO 10727 No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has t
5、he exclusive right of sale for German Standards (DIN-Normen).Normenausschuss Bauwesen (NABau) im DINEnglish price group 9www.din.dewww.beuth.de10.04 9575118Continued overleaf.Document comprises 10 pages.Supersedes DIN 10801,January 1995 edition.Page 2DIN ISO 10727 : 2004-05AmendmentsDIN 10801, Janua
6、ry 1995 edition, has been superseded by the specifications of DIN ISO 10727.Previous editionsDIN 10801: 1986-10, 1995-01.National Annex NAStandard referred to(and not included in Normative references and Bibliography)DIN 10806 Preparation of ground tea samples of known dry matter contentPage 1ISO 10727 : 2002Tea and instant tea in solid formDetermination of caffeine content Method using high-performance liquid chromatographyPage 2ISO 10727 : 2002Page 3ISO 10727 : 2002Page 4ISO 10727 : 2002Page 5ISO 10727 : 2002Page 6ISO 10727 : 2002Page 7ISO 10727 : 2002Page 8ISO 10727 : 2002
