ISO INTERNATIONAL STANDARD 835 First edition 2007-04-01 Laboratory glassware Graduated pipettes Verrerie de laboratoire Pipettes graduées Reference number ISO 835:2007(E) @ISO2007 by IHS under lic Not for Resale ISO835:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF fle can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ?ISO2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2007 - All rights reserved ted without license from IHS Not for Resale ISO 835:2007(E) Contents Page Foreword 1 Scope 2 Normative references 3 Terms and definitions. 4 Basis of adjustment.. 4.1 Unit of volume .. 4.2 Delivery volume 4.3 Reference temperature.. 5 Types and classes of accuracy .. 5.1 Ciasses of accuracy .... 5.2 Types of pipettes .... 6 Maximum permissible errors. 7 Construction... 7.1 Material 7.2 Dimensions.. 7.3 Top of pipette 7.4 Delivery jet 7.5 Delivery time... 7.6 Waiting time. 8 Graduation, figuring and patterns. 8.1 Graduation patterns.. 8.2 Position of graduation lines 8.3 Figuring of graduation lines 9 Setting of the meniscus 10 Marking 11 Visibility of graduation lines, figures and inscriptions. 12 Colour coding.. Annex A (normative) Definition of capacities and delivery times. Bibliography. CopyrightIneationalOanzaandardizaoghtsreseved ii put license from IHS Not for Resale ISO 835:2007(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with isO, also take part in the work. iso collaborates closely with the InternationalElectrotechnicalCommission(iEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 835 was prepared by Technical Committee ISO/TC 48, Laboratory equipment, Subcommittee SC 6, Laboratory and volumetric ware. This first edition of ISO 835 cancels and replaces ISO 835-1:1981, IsO 835-2:1981, ISsO 835-3:1981 and IsO 835-4:1981, which have been technically revised and combined into one document. ISo 2007 - All rights reserved ional Organization for Standardizatior INTERNATIONAL STANDARD ISO 835:2007(E) Laboratory glassware Graduated pipettes Scope This International Standard specifies metrological and constructional requirements for graduated pipette