ASTM_D_1500_-_12.pdf

Designation:D150012Designation:196/97Standard Test Method forASTM Color of Petroleum Products(ASTM Color Scale)1This standard is issued under the fixed designation D1500;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.Scope*1.1 This test method covers the visual determination of thecolor of a wide variety of petroleum products,such aslubricating oils,heating oils,diesel fuel oils,and petroleumwaxes.NOTE1Test Method D156 is applicable to refined products that havean ASTM color lighter than 0.5.1.2 This test method reports results specific to the testmethod and recorded as“ASTM Color.”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:2D156 Test Method for Saybolt Color of Petroleum Products(Saybolt Chromometer Method)D938 Test Method for Congealing Point of PetroleumWaxes,Including PetrolatumD2500 Test Method for Cloud Point of Petroleum ProductsD4057 Practice for Manual Sampling of Petroleum andPetroleum Products3.Summary of Test Method3.1 Using a standard light source,a liquid sample is placedin the test container and compared with colored glass disksranging in value from 0.5 to 8.0.When an exact match is notfound and the sample color falls between two standard colors,the higher of the two colors is reported.4.Significance and Use4.1 Determination of the color of petroleum products is usedmainly for manufacturing control purposes and is an importantquality characteristic,since color is readily observed by theuser of the product.In some cases,the color may serve as anindication of the degree of refinement of the material.When thecolor range of a particular product is known,a variation outsidethe established range may indicate possible contamination withanother product.However,color is not always a reliable guideto product quality and should not be used indiscriminately inproduct specifications.5.Apparatus5.1 Colorimeter,consisting of light source,glass colorstandards,sample container housing with cover,and viewingpiece as listed in Annex A1.5.2 Sample ContainerFor referee work,use the glasssample jar as shown in Fig.1.For routine tests,it is permissibleto use a cylindrical,clear glass jar with a flat bottom of 30 to32.4 mm internal diameter,115 to 125 mm in external height,and a wall thickness no greater than 1.6 mm as specified in TestMethod D2500,or an ordinary 125-mL oil sample bottle if itmeets these requirements.5.3 Ultrasonic Bath,Unheated(optional)of suitable di-mensions to hold container(s)placed inside of bath,for use ineffectively dissipating and removing air or gas bubbles that canbe entrained in viscous sample types prior to analysis.6.Sampling6.1 Samples shall be taken in accordance with the instruc-tions in Practice D4057.6.2 For some sample types,such as viscous lube oils that areprone to having entrained air or gas bubbles present in thesample,the use of an ultrasonic bath(see 5.3)without theheater turned on(if so equipped),has been found effective indissipating bubbles typically within 10 min.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels,Petroleum Coke and Carbon Material.Current edition approved Dec.1,2012.Published March 2013.Originallyapproved in 1957.Last previous edition approved in 2007 as D150007.DOI:10.1520/D1500-12.This is also a standard of Energy Institute issued under the fixed designation IP196.The final number indicates the year of last revision.This test method wasadopted as a jointASTM-IP standard in 1966.In the IP,this test method is under thejurisdiction of the Standardization Committee.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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.Diluent7.1 Solvent Kerosine(WarningCombustible.Vaporharmful.)Having a color lighter than+21 Saybolt color by TestMethod D156,this material is used for diluting dark samplesfor the test.As an alternative,other solvents,such as white oilor solvent neutral 100 of satisfactory purity that meet the colorrequirements specified here in 7.1,are also acceptabl