ISO INTERNATIONAL STANDARD 11024-1 First edition 1998-12-01 Essential oils General guidance on chromatographic profiles - Part 1: Preparation of chromatographic profiles for presentation in standards Huiles essentielles Directives genérales concernant les profils chromatographiques - Partie 1: Elaboration des profils chromatographiques pour la présentation dans les normes ISO Referencenumber ISO 11024-1:1998(E) HS under I without license from IHS Not for Resale ISO 11024-1:1998(E) Contents Page Scope 1 2 Normative references 1 Terms anddefinitions 1 4 Principle 2 5 Samples of the essential oil to be examined 2 6 Apparatus 2 Performance of the apparatus 3 8 Preparation of test sample 4 Identification and selection of the representative and characteristic components of the essential oil 4 10 Fixing the concentration limits 4 11 Expression of results 5 12 Test report 5 Annex A (informative) Example of use of the test mixture to verify a gas chromatographic installation 6 Annex B (informative) Practical example of the elaboration of the chromatographic profile of the essential oil of sage (SalviaofficinalisL.) ................ 7 @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher International Organizationfor Standardization Case postale 56 . CH-1211 Geneve 20 · Switzerland Internet [email protected] Printed in Switzerland Copyright International Organization for Standardization by IHS under e from IHS Not for Resale @ ISO ISO 11024-1:1998(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through isO technicalcommittees.Eachmemberbodyinterestedinasubjectforwhich atechnicalcommitteehasbeenestablishedhastherighttoberepresented governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. ISO/TC 54, Essential oils. International Standard isO 11024 consists of the following parts, under the general title Essential oils General guidance on chromatographic profiles: Part 1: Preparation of chromatographic profiles for presentation in standards Part 2: Utilization of chromatographic profiles of samples of essential oils Annexes A and B of this part of ISO 11024 are for information only. ili Not for Resale