ISO INTERNATIONAL STANDARD 6270-1 Second edition 2017-11 Paints and varnishes Determination of resistance to humidity - Part 1: Condensation (single-sided exposure) Peintures et vernis -Détermination de la résistance a I'humidité- Partie 1: Condensation (exposition sur une seule face) Reference number IS0 6270-1:2017(E) ISO @IS02017 IS0 6270-1:2017(E) Contents Page Foreword .iv Introduction .. 1 Scope. 2 Normative references .1 3 Terms and definitions .1 4 Limitations. .1 5 Principle .2 6 Apparatus .2 7 Test specimen .4 8 Procedure. ..4 9 Evaluation .4 10 Precision .4 11 Test report .4 Bibliography 6 @ IS0 2017 - All rights reserved iii IS0 6270-1:2017(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 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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are describedintheIso/lECDirectives,Part1.Inparticularthedifferentapprovalcriterianeededforthe different types of Iso documents should be noted. This document was drafted in accordance with the editorial rules of the ISo/IEC Directives, Part 2 (see www.iso.org/directives). 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. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISo list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the voluntary nature of standards, the meaning of Iso specific terms and expressions related to conformity assessment, as well as information about Iso's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html. This document was prepared by Technical Committee Iso/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes. This second edition cancels and replaces the first edition (Is0 6270-1:1998), which has been technically revised. The main changes compared to the previous edition are as follows: the title has been changed; - the terms and definitions clause has been added; a limitations clause concerning the use of other than standard test conditions has been added; the preparation of test specimens from liquid paints has been deleted, so only the exposure of coated specimens is described; the normative requirement on evaluation in accordance with Is0 4628 has been deleted; information has been moved to the introduction, as it is in IS0 6270-2; the size of the test specimens has been changed; the requirement to use water of grade 3 purity in accordance with Is0 3696[1] was deleted; a clause on installation of the apparatus has been added; the precision has been clarified; the normative references have been updated; the supplementary test conditions previously in Clause 4 and Annex A have been integrated in the test report, as appropriate, or deleted. A list of all the parts in the ISO 6270 series can be found on the ISO website. iv @ IS0 2017 - All rights reserved