TECHNICAL ISO/TR REPORT 19686-100 Firstedition 2016-12-01 Petroleumproducts-Equivalency oftest method determining the same property- Part 100: Background and principle of the comparison and the evaluation of equivalency Produits petroliers-Equivalencedes methodes d'essai determinant lamemepropriete- Partie1oo:Fondement etprincipedela comparaisonetde l'évaluationdeI'équivalence Referencenumber ISO/TR19686-100:2016(E) ISO ISO2016 IS0/TR19686-100:2016(E) Contents Page Foreword .iv Introduction. 1 Scope.. 2 Normative references 3 Terms and definitions 4 Comparison. .1 4.1 Reasons for divergence .1 4.2 Equivalency .1 5 Questionnairefor checking similarities oftest methods 2 Intematonat Organization @sS0.2.a1.6*-All rights reserved ili IS0/TR19686-100:2016(E) Foreword IsO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandards bodies (isO member bodies).The work ofpreparing International Standards is normally carried out through Iso technical committees.Each member body interested in a subjectfor 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 closelywiththeInternationalElectrotechnical Commission(lEC)on allmattersof electrotechnicalstandardization. The procedures used to develop this document and those intended for its further maintenance are described intheIsO/IECDirectives,Part1.Inparticular the different approval criterianeededfor the different types of Iso documents should be noted.This document was drafted in accordance with the editorialrulesoftheISo/IECDirectives,Part2 (seewww.iso.org/directives). Attention isdrawntothepossibilitythat someof theelementsof thisdocumentmaybethesubjectof patent rights,IsO shall not be held responsible for identifying any or all such patentrights,Details of any patent rights identified during thedevelopment of the document will be in the Introduction and/or ontheIsolistofpatentdeclarationsreceived (seewww.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constituteanendorsement, ForanexplanationonthemeaningofisOspecifictermsandexpressionsrelatedtoconformityassessment, aswellasinformationaboutIsO'sadherencetotheWorldTradeOrganization(WTO)principlesinthe TechnicalBarrierstoTrade(TBT)seethefollowingURL:www.iso.org/iso/foreword.html. The committee responsible for this document is Iso/Tc 28, Petroleum products and related products of syntheticorbiologicalorigin A list of theparts of ISO/TR19686canbefound ontheISOwebsite.