1、Designation:D112216(Reapproved 2017)1Standard Test Method forDensity or Relative Density of Engine Coolant Concentratesand Engine Coolants By The Hydrometer1This standard is issued under the fixed designation D1122;the number immediately following the designation indicates the year oforiginal adopti
2、on 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.1NOTEEd
3、itorial changes were made throughout in April 2017.1.Scope1.1 This test method covers the determination of the relativedensity of engine coolant concentrates and engine coolants.1.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.
4、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.1.4 This internation
5、al 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.
6、2.Referenced Documents2.1 ASTM Standards:2D1176 Practice for Sampling and Preparing Aqueous Solu-tions of Engine Coolants orAntirusts for Testing PurposesE1 Specification for ASTM Liquid-in-Glass ThermometersE100 Specification for ASTM HydrometersE230/E230M Specification and Temperature-Electromotiv
7、eForce(emf)Tables for Standardized Thermocouples3.Terminology3.1 Definitions:3.1.1 relative density,nthe ratio of the density of amaterial at a stated temperature to the density of water at thesame stated temperature.4.Significance and Use4.1 The relative density of an engine coolant may be used tod
8、etermine the approximate percent glycol,freezing point,andboiling point,provided the glycol type is known.4.2 The relative density of an engine coolant concentratecan be used as a production control test.5.Apparatus5.1 HydrometersHydrometers shall be of glass,graduatedin specific gravity range as li
9、sted in Table 1,and shall conformto Specification E100.5.2 Hydrometer CylinderThe hydrometer cylinder inwhich the sample for the relative density test is confined shallbe made of clear glass and shall be cylindrical in shape.Forconvenience in pouring,it may have a lip on the rim.Theinside diameter o
10、f the cylinder shall be at least 25.4 mm(1.0 in.)greater than the outside diameter of the hydrometer.The height of the cylinder shall be such that the length of thecolumn of sample it contains is greater by at least 25.4 mm(1.0 in.)than the portion of the hydrometer which is immersedbeneath the surf
11、ace of the sample after a state of equilibriumhas been reached.5.3 Temperature Measuring Instrument(Environmentallysafe thermometer or thermocouple).An ASTM Partial Immer-sion Thermometer,having a range from 5 to 300 C andconforming to the requirements for thermometer 2C or 2F,asprescribed in Specif
12、ication E1,or some suitable non-mercurycontainingtemperaturemeasuringdevice,suchasathermocouple,capable of operating in the same temperaturerange and having equal or better accuracy as summarized inSpecification E230/E230M.See Section 8,Precision and Bias.1This test method is under the jurisdiction
13、of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.03 on Physical Properties.Current edition approved April 1,2017.Published April 2017.Originallyapproved in 1950.Last previous edition approved in 2016 as D1122-16.DOI:10.1520/D1122-16R17E01
14、.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,We
15、st 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 Trad
16、e Organization Technical Barriers to Trade(TBT)Committee.1 5.4 Water BathA water bath capable of maintaining asample temperature of 15.5 6 0.3 C(60 6 0.5 F)during thetest.6.Sampling6.1 Sample the coolant in accordance with Test MethodD1176,except as specified in this test method.7.Procedure7.1 If the coolant has a small amount of separated upperlayer,remove it before determining the relative density of thelower layer.To separate,pour the sample into a 500-mLseparatory funnel,allow to stand for 3
