ISO INTERNATIONAL STANDARD 2813 Fourth edition 2014-10-01 PaintsandvarnishesDetermination ofglossvalueat20,60°and85° Peinturesetvernis--Determinationde Il'indicedebrillancea2060 et85° Referencenumber IS02813:2014(E) ISO ISO2813:2014(E) Contents Page Foreword .iv 1 Scope .1 2 Normativereferences .1 Terms and definitions .1 4 Principle 2 5 Basic principles of the gloss measurement ..2 6 Apparatus and calibration equipment 4 6.1 Glossmeter.. 6.2 Measurement standards (certifiedreference material,workingmeasurement standards)7 7 Test panels 8 7.1 Substrate .8 7.2 Preparation and coating 8 7.3 Dryingandconditioning .8 7.4 Thickness of coating. 8 8 Calibrationandadjustmentoftheglossmeter 8 8.1 Preparationoftheapparatus .8 8.2 Zero pointcheck .8 8.3 Calibrationandadjustment .9 9 Procedure .9 9.1 Selectionofgeometry .9 9.2 Gloss measurement .9 10 Precision 10 10.1 General .10 10.2 Repeatability limit 10 10.3 Reproducibilitylimit .10 11 Test report. .10 AnnexA(normative)Possiblesourcesoferror .12 AnnexB (normative)Calibrationstandards .15 AnnexC(informative)Glosscalculationofprimaryreferencestandards .17 AnnexD(informative)Details onprecision .21 Bibliography 23 IS02813:2014(E) Foreword Iso(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandards bodies (isO member bodies).The work of preparing International Standards is normally carried out throughIsotechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committee has been established has theright to be represented on that committee.International organizations,governmental and non-governmental, in liaison with iso,also take part in the work. ISo collaborates closelywith the International Electrotechnical Commission (IEC) on all matters of electrotechnicalstandardization. The procedures used to develop this document and those intended for its further maintenance are described in theIso/IEc Directives, Part1.In particular the differentapproval criteria needed for the different types of iso documents should be noted.This document was drafted in accordance with the editorialrules oftheISo/IEcDirectives,Part2 (seewww.iso.org/directives). Attention isdrawnto thepossibility that some of the elements ofthis document may be the subject of patentrights.isO shall notbeheldresponsiblefor identifying any orall suchpatentrights.Details ofany patent rights identified during the development of the document will be in the Introduction and/or on theIso listof patentdeclarations received (seewww.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 meaning of IsO specific terms and expressions related to conformity assessment,aswellas informationabout IsO'sadherencetotheWTOprinciplesintheTechnical Barriers toTrade(TBT)seethefollowingURL:Foreword-Supplementaryinformation. The committeeresponsiblefor thisdocument isISo/TC 35,Paints and varnishes, Subcommittee SC9, Generaltestmethodsforpaintsandvarnishes. This fourthedition cancels and replacesthethird edition (is02813:1994),whichhas been technically revised.ItalsoincorporatestheTechnicalCorrigendumIS02813:1994/Cor.1:1997. Themaintechnicalchangesare: a) the title has been changed; b) the scope has been extended to include gloss measurement ofmetallic coatings; theterm"speculargloss"hasbeenreplaced by"gloss"; d) thegloss value is indicated in gloss units (GU); anewannex (AnnexA)concerningpossible sources of error has beenadded; f) anewannex (AnnexB)concerningcalibrationstandardshasbeenadded; g) anewannex (AnnexC)concerninggloss calculationofprimaryreferencestandardshasbeenadded; h) anewannex (AnnexD)concerning details on precision has been added; i the precisiondata aretheresults ofalarge interlaboratorytest.