1、Designation:E12302(Reapproved 2012)Standard Specification forApparatus for Determination of Water by Distillation1This standard is issued under the fixed designation E123;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of la
2、st revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers apparatus used in Test MethodD95 and other similar ASTM test methods.2.Referenced Documents2.1 ASTM
3、 Standards:2D95 Test Method for Water in Petroleum Products andBituminous Materials by Distillation3.Apparatus Assembly3.1 Typical assemblies of the apparatus are shown in Fig.1and Fig.2.The glass flask has been generally used forpetroleum products,soaps,naval stores,etc.,and the metal stillfor road
4、 materials and tars.4.Glass Flask4.1 The glass flask shall have nominal capacities of 500 mLor 1000 mL,as required,and shall be made of heat-resistantglass.Styles shall be as shown in Fig.3 and Fig.4 and as listedin the following table:StyleSize,mLShapeTop FinishFigureA500roundwith$jointFig.3B500rou
5、ndwith$jointFig.3C1000roundwith$jointFig.3D500Erlenmeyerwith$jointFig.45.Metal Still5.1 The metal still shall have an approximate capacity of1000 mL.It may be constructed of any suitable metal;butcopper is recommended for the vessel,and copper or brass forthe lid.Fig.5 shows the essential dimensions
6、 and a satisfactoryconstruction of vessel head and clamp.Other means of closuremay be used that provide a tight seal of head to body.6.Heater6.1 Any suitable gas burner or electric heater may be usedwith the glass still.With the metal still,a ring gas burner,having an inside diameter of 414in.(108 m
7、m)with holes in theinside periphery should be used.7.Condenser7.1 The condenser shall be a Liebig or West straight typewith a jacket not less than 400 mm long.Fig.6 shows thegeneral construction of suitable condensers.8.Traps8.1 The traps shall be of 5-mL,10-mL,and 25-mL capaci-ties.Six styles are p
8、rovided as specified in Table 1 and shownin Figs.7-11.9.Keywords9.1 apparatus;distillation1This specification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onApparatus.Current edition approved Nov.1,2012.Published Novem
9、ber 2012.Originallyapproved in 1956.Last previous edition approved in 2007 as E123 02(2007).DOI:10.1520/E0123-02R12.2For 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 s
10、tandards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 NOTE1Trap shall be 15 to 16 mm in inside diameter.FIG.1 Typical Assemblies with Glass FlaskFIG.2 Typical Assemblies with Metal StillNoteAll
11、dimensions are in millimetres.A.500 mL with Taper Joint.B.500 mL with Ball-and-Socket Joint.C.1000 mL with Taper Joint.FIG.3 Glass Flasks,Round-BottomE123 02(2012)2 FIG.4 Erlenmeyer Flask,500-mL CapacityFIG.5 Metal StillE123 02(2012)3 NOTE1Ends of connections to water supply and drain may vary indes
12、ign.Connection may be on same or opposite sides of jacket.FIG.6 CondensersTABLE 1 Dimensions and Sizes of TrapsStyleDescriptionFigureSize ofTrap,mLRange,mLSmallest ScaleDivision,mLScale Error,max,mLTop ofGraduatedTubeBottom ofGraduatedTubeBottom ofVaporTubeA$jointconical$joint7100 to 1.00.10.05over
13、1.0 to 10.00.20.1B jointconical joint80 to 1.00.10.05C jointconicalplain925over 1.0 to 250.20.1Dplainconicalplain10E$jointround$joint1150 to 5.00.10.05100 to 10.00.10.1E123 02(2012)4 NOTE1All dimensions are in millimetres.FIG.7 Traps(Style A)NOTE1All dimensions are in millimetres.FIG.8 Traps(Style B
14、)NOTE1All dimensions are in millimetres.FIG.9 Traps(Style C)E123 02(2012)5 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of this standard are expressly advised that determination of the validity
15、of any such patent rights,and the riskof infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved or withdrawn.Your comments are
16、invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee,which you may attend.If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards,at the address shown below.This standard is copyrighted by ASTM International,100 Barr Harbor Drive,PO Box C700,West
