1、Designation:D800820Standard Practice forRepresentative Field Sampling of Traffic Paints1This standard is issued under the fixed designation D8008;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 p
2、arentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers procedures for obtaining represen-tative field samples of mixed or unmixed waterborne,solventborne,or other liquid traffic paints
3、,including twocomponent reactive materials from drums,totes,or machinestriping tanks.Traffic paint samples are often taken fromstorage containers in the field by paint suppliers or governmentagencies for laboratory testing to determine product qualityand/or for approvals prior to striping.It is impo
4、rtant that thesamples taken are“representative”(have a composition reflect-ing the overall composition in the container).Although trafficpaints can remain homogeneous for weeks or months,somewill stratify over time and become non-homogeneous.Obtain-ing a representative sample can be challenging part
5、icularly ina field environment.The desired method for obtaining a liquidsample is to thoroughly mix the sample until homogeneous andthen sample the mixture from the top.If complete mixing cantbe verified then an alternative practice is to obtain a sampleusing a liquid tube sampling device.These devi
6、ces have theability to capture a top-to-bottom core of paint from thecontainer.Inner or outer rod tube samplers are recommendedfor sample extraction.The inner rod tube sampler is thepreferred sampler.1.2 The practice selected for representative sampling shouldhave written agreement between the parti
7、es providing theproduct and those testing the product.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purpo
8、rt 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was
9、developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Doc
10、uments2.1 ASTM Standards:2D562 Test Method for Consistency of Paints MeasuringKrebs Unit(KU)Viscosity Using a Stormer-Type Viscom-eterD1475 Test Method for Density of Liquid Coatings,Inks,and Related ProductsD3925 Practice for Sampling Liquid Paints and RelatedPigmented CoatingsD5495 Practice for Sa
11、mpling With a Composite LiquidWaste Sampler(COLIWASA)2.2 ISO Documents:3ISO 1513 Paints and varnishes Examination and prepa-ration of test samplesISO 15528 Paints,varnishes,and raw materials for paintsand varnishes Sampling3.Terminology3.1 The following terms apply to this practice:3.1.1 COLIWASA(co
12、mposite liquid waste sampler),natube type device that is typically used as a zone sampler formany types of liquids.3.1.2 composite core sampler,na compartmented tubetype sampler that is potentially capable of obtaining a repre-sentative core sample.3.1.3 core sample,na sample extracted from a contai
13、nertop-to-bottom with a tube type device.3.1.4 liquid scoop,na type of liquid thief sampler withcompartments and slide closure that potentially can be used toobtain a representative core sample3.1.5 liquid thief sampler,na tube or scoop device used toextract a liquid sample.1This practice is under t
14、he jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.44 on Traffic Coatings.Current edition approved June 1,2020.Published July 2020.Originally approvedin 2015.Last previous edition approved in 2015 as D8008
15、 15.DOI:10.1520/D8008-20.2For 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 American National Standar
16、ds Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committe
