ASTM_D_1849_-_95_2019.pdf

Designation:D184995(Reapproved 2019)Standard Test Method forPackage Stability of Paint1This standard is issued under the fixed designation D1849;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the change in consistency andcertain other properties that may take place when liquid paintof either the solvent-reducible or water-reducible type is storedat a temperature above 0 C(32 F).1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was 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 Documents2.1 ASTM Standards:2D562 Test Method for Consistency of Paints MeasuringKrebs Unit(KU)Viscosity Using a Stormer-Type Viscom-eterD869 Test Method for Evaluating Degree of Settling of PaintD3925 Practice for Sampling Liquid Paints and RelatedPigmented Coatings3.Apparatus3.1 Spatula,weighing 45 6 1 g with square-ended blade120 mm(434in.)in length and approximately 20 mm(1316in.)in width as described in Test Method D869.3.2 ViscometerAStormer viscometer with the paddle-typerotor as described in Test Method D562.3.3 Paint Brush,38 mm(112in.)polyester or nylon/polyester,13-mm(12-in.)thick and 63-mm(212-in.)length out,chisel tip.3.4 Test SurfaceA smooth-surfaced paper chart coatedwith a suitable varnish or lacquer so as to render the surfaceimpervious to paint vehicles.4.Procedure4.1 Obtain duplicate samples of the paint in original,un-opened containers in accordance with Practice D3925(Note 1).If a long-term test calls for intermediate examinations,obtainan additional duplicate sample for each intermediate examina-tion as agreed upon between laboratories or buyer and seller.Examine one of the samples received for the characteristicslisted in 4.2,using the procedures therein described.Weigh theother unopened samples to the nearest 1 g,then hold themundisturbed for specified periods of time and ranges oftemperature,as agreed upon between purchaser and seller(Note 2).After storage,reweigh the samples without shaking todetermine any loss of weight resulting from faulty closure.NOTE1Containers should preferably be no larger than 1 L(1 qt).NOTE2Storage for one month at 52 6 1 C(125 6 2 F)simulatessome of the effects of storage for six months to one year at 23 6 2 C(736 3.5 F).However,it should be recognized that storage at 125 F maynot simply accelerate changes occurring at 73 F.With water-borne paints,for example,at 125 F the growth of some putrefying bacteria is inhibited.4.2 Bring the stored samples to 23 6 2 C(73 6 3.5 F).Note any evidence of pressure or vacuum in the unopenedcontainer.Open each container and note any skinning,corro-sion and odor of putrefaction,rancidity,or souring.Disregardother odors.If the sample is in a 1-L(1-qt)or smaller container,measure the character of the lower or settled layer with thespatula as described in Test Method D869.If the sample islarger than 1 qt,omit this step.Hand stir each paint 300 stirs in2 min with a spatula appropriate to the container,stirring so asto ensure uniform distribution of any settled material(Note 3and Note 4).4.3 Immediately after stirring,measure the consistency ofthe paint in accordance with Test Method D562.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.42 on Architectural Coatings.Current edition approved April 1,2019.Published April 2019.Originallyapproved in 1961.Last previous edition approved in 2014 as D1849 95(2014)1.DOI:10.1520/D1849-95R19.2For 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.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 theDeve