ASTM_D_7042_-_21a.pdf

Designation:D704221aStandard Test Method forDynamic Viscosity and Density of Liquids by StabingerViscometer(and the Calculation of Kinematic Viscosity)1This standard is issued under the fixed designation D7042;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.Scope*1.1 This test method covers and specifies a procedure for theconcurrent measurement of both the dynamic viscosity,andthe density,of liquid petroleum products and crude oils,bothtransparent and opaque.The kinematic viscosity,can beobtained by dividing the dynamic viscosity,by the density,obtained at the same test temperature.1.2 The result obtained from this test method is dependentupon the behavior of the sample and is intended for applicationto liquids for which primarily the shear stress and shear rate areproportional(Newtonian flow behavior).1.3 The precision has only been determined for thosematerials,viscosity ranges,density ranges,and temperatures asindicated in Section 15 on Precision and Bias.The test methodcan be applied to a wider range of materials,viscosity,density,and temperature.For materials not listed in Section 15 onPrecision and Bias,the precision and bias may not be appli-cable.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 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 todetermine the applicability of regulatory limitations prior touse.1.6 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:2D341 Practice for Viscosity-Temperature Equations andCharts for Liquid Petroleum or Hydrocarbon ProductsD396 Specification for Fuel OilsD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D975 Specification for Diesel FuelD1655 Specification for Aviation Turbine FuelsD2162 Practice for Basic Calibration of Master Viscometersand Viscosity Oil StandardsD2270 Practice for Calculating Viscosity Index from Kine-matic Viscosity at 40 C and 100 CD4052 Test Method for Density,Relative Density,and APIGravity of Liquids by Digital Density MeterD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products,Liquid Fuels,and LubricantsD6617 Practice for Laboratory Bias Detection Using SingleTest Result from Standard MaterialD6708 Practice for Statistical Assessment and Improvementof Expected Agreement Between Two Test Methods thatPurport to Measure the Same Property of a MaterialD6751 Specification for Biodiesel Fuel Blend Stock(B100)for Middle Distillate FuelsD7467 Specification for Diesel Fuel Oil,Biodiesel Blend(B6 to B20)D7566 Specification for Aviation Turbine Fuel ContainingSynthesized HydrocarbonsD7915 Practice for Application of Generalized ExtremeStudentized Deviate(GESD)Technique to Simultane-ously Identify Multiple Outliers in a Data Set1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.07 on Flow Properties.Current edition approved Nov.1,2021.Published December 2021.Originallyapproved in 2004.Last previous edition approved in 2021 as D7042 21.DOI:10.1520/D7042-21A.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 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)Committee.12.2 ISO Standards:3ISO 5725 Accuracy(Trueness and Precision)of Measure-ment Methods and ResultsISO 8217 Petroleum products Fuels(class F)ISO/IEC 17025 General Requirements for the Competenceof Testing and Calibration Laboratorie