1、Designation:D142913Standard Test Methods forSpecific Gravity of Water and Brine1This standard is issued under the fixed designation D1429;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 parenthes
2、es indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 These test methods cover the determination of thespecific gravity of water and brine free of separable oil,asfollows:SectionsTest Method APycnometer7 to 11,2
3、1Test Method BBalance12 to 16,21Test Method CErlenmeyer Flask17 to 21Test Method DHydrometer22 to 271.2 Test Methods A and B are applicable to clear waters orthose containing only a moderate amount of particulate matter.Test Method B is preferred for samples of sea water or brinesand is more sensiti
4、ve than Test Method D which has the samegeneral application.Test Method C is intended for samples ofwater containing mud or sludge.1.3 It is the users responsibility to ensure the validity ofthese test methods for waters of untested matrices.1.4 The test method was tested at 22C over a range,shownin
5、 Tables 1-4,of 1.0252 through 1.2299;all data werecorrected to 15.6C(60F).1.5 The values stated in SI units are to be regarded asstandard.The values given in parentheses are mathematicalconversions to inch-pound units that are provided for informa-tion only and are not considered standard.1.6 This s
6、tandard 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 AS
7、TM Standards:2D1066 Practice for Sampling SteamD1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3370 Practices for Sampling Water from Closed ConduitsD5847 Practice for W
8、riting Quality Control Specificationsfor Standard Test Methods for Water AnalysisE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids3.Terminology3.1 DefinitionsFor definitions of terms used in these testmethods,refer to Terminology D1129.3.2 Definitions of Te
9、rms Specific to This Standard:3.2.1 brine,nwater that contains dissolved matter at anapproximate concentration of more than 30 000 mg/L.4.Significance and Use4.1 Specific gravity is an important property of fluids beingrelated to density and viscosity.Knowing the specific gravitywill allow determina
10、tion of a fluids characteristics comparedto a standard,usually water,at a specified temperature.Thiswill allow the user to determine if the test fluid will be heavieror lighter than the standard fluid.5.Reagents5.1 Purity of WaterUnless otherwise indicated,referenceto water shall be understood to me
11、an reagent water conformingto Specification D1193,Type I.Other reagent water types maybe used provided it is first ascertained that the water is ofsufficiently high purity to permit its use without adverselyaffecting the precision and bias of the test method.Type IIIwater was specified at the time o
12、f round robin testing of thistest method.6.Sampling6.1 Collect the samples in accordance with Practices D3370and Practice D1066.6.2 In view of the lack of a standard test method forsampling mud or sludge,no instructions are given for samplingthis type of material.1These test methods are under the ju
13、risdiction of ASTM Committee D19 onWater and are the direct responsibility of Subcommittee D19.05 on InorganicConstituents in Water.Current edition approved June 1,2013.Published July 2013.Originally approvedin 1956.Last previous edition approved in 2008 as D1429 08.DOI:10.1520/D1429-13.2For referen
14、ced 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 AST
15、M International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TEST METHOD APYCNOMETER7.Summary of Test Method7.1 The sample is introduced into a pycnometer,stabilizedat the desired temperature,and weighed.The specific gravity iscalculated from this weight and the p
16、reviously determinedweight of reagent water that is required to fill the pycnometerat the same temperature.8.Apparatus8.1 BathConstant-temperature bath designed to maintaina temperature of 15.6 6 1C(60 6 1.8F).If any othertemperature must be used due to local conditions,appropriatecorrections shall be made.8.2 PycnometerCylindrical or conical glass vessel care-fully ground to receive an accurately fitting 24/12 standardtaper glass stopper provided with a hole approximately 1.0 to2.0 mm in diamet
