ASTM_D_7195_-_06_2012.pdf

Designation:D719506(Reapproved 2012)Standard Guide forProtocol for Setting Color Specifications for a Material1This standard is issued under the fixed designation D7195;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide leads the user through the process for settinga color tolerance for a product or material.It points to theappropriate ASTM standards that affect each step of theprocess.It includes the discussion points on which the twoparties must agree and provides caveats for various optionsselected.1.2 This guide does not suggest numerical values for toler-ances.These values must be agreed upon by the two partiesinvolved.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D523 Test Method for Specular GlossD1729 Practice for Visual Appraisal of Colors and ColorDifferences of Diffusely-Illuminated Opaque MaterialsD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesD3134 Practice for Establishing Color and Gloss TolerancesD3964 Practice for Selection of Coating Specimens forAppearance MeasurementsD4086 Practice for Visual Evaluation of MetamerismD4449 Test Method for Visual Evaluation of Gloss Differ-ences Between Surfaces of Similar AppearanceD5531 Guide for Preparation,Maintenance,and Distributionof Physical Product Standards for Color and GeometricAppearance of CoatingsE179 Guide for Selection of Geometric Conditions forMeasurement of Reflection and Transmission Propertiesof MaterialsE253 Terminology Relating to Sensory Evaluation of Mate-rials and ProductsE284 Terminology of AppearanceE308 Practice for Computing the Colors of Objects by Usingthe CIE SystemE805 Practice for Identification of Instrumental Methods ofColor or Color-Difference Measurement of MaterialsE1164 Practice for Obtaining Spectrometric Data for Object-Color EvaluationE1345 Practice for Reducing the Effect of Variability ofColor Measurement by Use of Multiple MeasurementsE1347 Test Method for Color and Color-Difference Mea-surement by Tristimulus ColorimetryE1499 Guide for Selection,Evaluation,and Training ofObserversE1708 Practice for Electronic Interchange of Color andAppearance DataE1808 Guide for Designing and Conducting Visual Experi-mentsE2214 Practice for Specifying and Verifying the Perfor-mance of Color-Measuring Instruments2.2 CIE PublicationsCIE 15:2004 Colorimetry,3rdedition33.Terminology3.1 DefinitionsFor definitions of terms related to thisguide see Terminology E253 and Terminology E284.4.Summary of Guide4.1 This guide describes the process for establishing a colorspecification for a material,including the decision as towhether this specification will be based on visual or instrumen-tal methods.4.2 General considerations of appearance,evaluation ofobservers,and measurement techniques are included.1This guide is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.26 on Optical Properties.Current edition approved June 1,2012.Published July 2012.Originally approvedin 2006.Last previous edition approved in 2006 as D7195 06.DOI:10.1520/D7195-06R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from U.S.National Committee of the CIE(International Commissionon Illumination),C/o Thomas M.Lemons,TLA-Lighting Consultants,Inc.,7 PondSt.,Salem,MA 01970,http:/www.cie-usnc.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.3 It begins the process of setting a tolerance by firstselecting a standard or target color for the material,includingthe production,measurement,and storage of that target.4.4 It next identifies methods to establish acceptable colortolerances.4.5 Finally,it discusses reporting techniques.5.Significance and Use5.1 The rejection of materials due to color is a common andexpensive occurrence,and it is useful for a customer andproducer to set a color specification with an associated toler-ance before the transaction.This guide discusses the conceptand details the ASTM standards to be used in the process.6.Introduction6.1 A common reason stated for rejection of goods ormaterials is that the product color does not meet expectations.The best way to avoid the problem of returned