1、Designation:E140494(Reapproved 2013)Standard Specification forLaboratory Glass Conical Flasks1This standard is issued under the fixed designation E1404;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numbe
2、r 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 provides standard dimensional re-quirements for glass conical flasks suitable for general labora-tory use.NOTE1For packaging
3、standards,choose the following standards;E920,E921,and E1133.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.2.Referenced Documents2.1 ASTM Standards:2E438 Specification for Glasses in Laboratory ApparatusE671 Specification f
4、or Maximum Permissible Thermal Re-sidual Stress in Annealed Glass Laboratory ApparatusE675 Specification for Interchangeable Taper-Ground Stop-cocks And StoppersE676 Specification for Interchangeable Taper-Ground JointsE920 Specification for Commercially Packaged LaboratoryApparatusE921 Specificatio
5、n for Export Packaged Laboratory Appa-ratusE1133 Practice for Performance Testing of Packaged Labo-ratory Apparatus for United States Government Procure-mentsE1157 Specification for Sampling and Testing of ReusableLaboratory Glassware3.Classification3.1 Conical flasks(Erlenmeyer)shall be in in the f
6、ollowingtypes and capacities.3.1.1 Type Igeneral purpose,with graduated scale.3.1.1.1 Class 1Narrow mouth with heavy duty beadedtop,in capacities of 25 mL,50 mL,125 mL,250 mL,300 mL,500 mL,1000 mL,1500 mL,2000 mL,4000 mL,and 6000mL.3.1.1.2 Class 2Wide mouth with heavy duty beaded top,in capacities o
7、f 125 mL,250 mL,500 mL,1000 mL,and 2000mL.3.1.2 Type IITapered ground joint,with graduated scale.3.1.2.1 Class 1Outer Conical,joint without stopper,incapacities of 50 mL,125 mL,250 mL,500 mL,1000 mL,and2000 mL.3.1.2.2 Class 2with stopper,in capacities of 25 mL,50mL,125 mL,250 mL,500 mL,and 1000 mL.3
8、.1.2.3 Class 3For iodine determination,in capacities of125 mL,250 mL,and 500 mL.3.1.3 Type IIIScrew thread finish,with graduated scale,incapacities of 50 mL,125 mL,250 mL,500 mL,1000 mL,and2000 mL.3.1.4 Type IVCulture;3.1.4.1 Class 1Long neck,plain top,in capacities of 50mL,125 mL,250 mL,500 mL,1000
9、 mL,and 2000 mL.3.1.4.2 Class 2Wide base(Fernbach),in capacity of 2800mL.3.1.4.3 Class 3Wide base,low form,in a capacity of 2500mL.NOTE2The term milliliter(mL)is commonly used as a special namefor the cubic centimeter(cm3)and similarly the liter(L)for 1000 cubiccentimeters,in accordance with the Int
10、ernational System of Units(SI).4.Material and Manufacturing4.1 Flasks shall be made of borosilicate glass conforming tothe requirements of Type I,Class A of Specification E438.4.2 Maximum residual thermal stress shall be such as toconform to Specification E671.5.Appearance5.1 The general appearance
11、of the flasks shall be as illus-trated in Fig.1.6.Design6.1 Conical flasks shall have flat bottoms.However,con-cavity in the bottom shall be permitted.The flask shall standvertically without rocking or spinning when placed on a level1This specification is under the jurisdiction of ASTM Committee E41
12、 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onApparatus.Current edition approved Nov.1,2013.Published December 2013.Originallyapproved in 1991.Last previous edition approved in 2008 as E140494(2008).DOI:10.1520/E1404-94R13.2For referenced ASTM standards,visit the
13、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,West Conshohocken,PA 19428-2959.United State
14、s1 surface.Bottom heel radius shall be between 15 and 20%ofthe maximum external diameter.6.2 Conical sides of the flask shall extend inwardly for thebottom and shall terminate in a short cylindrical neck.6.2.1 Type I and Type IV flasks shall have flask mouthfinished with a tooled,heavy duty bead.6.2
15、.2 Type II,Class 1 shall have taper-ground joint neckfinish in accordance with Specification E676.6.2.3 Type II,Class 2 and Class 3 shall have taper-groundstopper neck finish to comply with E675.The Class 3 flasksshall also have a funnel neck flare.Stopper shall be tall enoughto facilitate removal f
16、rom flask.6.2.4 Type III flasks shall have screw thread neck finish inaccordance with Glass Packaging Institute(G.P.I.)standardfinishes except as noted below.Dimensions shall be the sameas Type I(Table 1).6.2.4.1 G.P.I.thread finishes shall be 24 to 410 for the 50and 125 mL sizes,28 to 410 for the 250 mL size and 38 to 430for the 500,1000 and 2000 mL sizes except that the 38 to 430may be modified to have the thread begin near the rim ratherthan approximately 0.55 in.below it.6.3 Necks on all fla
