1、Designation:E137899(Reapproved 2016)Standard Specification forLaboratory Glass Multiple Neck Distilling/Boiling Flasks1This standard is issued under the fixed designation E1378;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、 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.Scope1.1 This specification provides standard dimensional re-quirements for multiple neck distilling/boiling flasks.1.2 The valu
3、es 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 for Maximum Permissible Thermal Re-sidual Stress in Annealed Glass Laborat
4、ory ApparatusE676 Specification for Interchangeable Taper-Ground JointsE920 Specification for Commercially Packaged LaboratoryApparatusE921 Specification for Export Packaged Laboratory Appa-ratusE1133 Practice for Performance Testing of Packaged Labo-ratory Apparatus for United States Government Pro
5、cure-mentsE1157 Specification for Sampling and Testing of ReusableLaboratory Glassware3.Classification3.1 Flasks shall be of the following types and sizes.3.1.1 Type IStandard taper($)necks,equal height:500 mL1 000 mL2 000 mL3 000 mL5 000 mL3.1.2 Type IIThree tooled necks,unequal height:250 mL500 mL
6、1 000 mL2 000 mL3 000 mL5 000 mL3.1.3 Type IIIThree standard taper($)necks,unequalheight:250 mL300 mL500 mL1 000 mL2 000 mL3 000 mL5 000 mL12 000 mL3.1.4 Type IVThree standard taper($)necks,equal height:250 mL500 mL1 000 mL2 000 mL3 000 mL5 000 mL3.1.5 Type VThree tooled necks,angled:200 mL500 mL1 0
7、00 mL3.1.6 Type VIThree standard taper($)necks,angled:25 mL50 mL100 mL200 mL250 mL300 mL500 mL1 000 mL3.1.7 Type VIITwo standard taper($)necks,unequalheight:500 mL1 000 mL2 000 mL5 000 mL1This specification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct resp
8、onsibility of Subcommittee E41.01 onLaboratory Ware and Supplies.Current edition approved Sept.1,2016.Published September 2016.Originallyapproved in 1990.Last previous edition approved in 2010 as E137899(2010).DOI:10.1520/E1378-99R16.2For referenced ASTM standards,visit the ASTM website,www.astm.org
9、,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.8 Type VIIITwo sta
10、ndard taper($)necks,angled:100 mL250 mL500 mL1 000 mLNOTE1The term millilitre(mL)is commonly used as a special namefor the cubic centimetre(cm3)and similarly the litre(L)for 1000 cubiccentimetres,in accordance with the International System of Units(SI).4.Material and Annealing4.1 Flasks shall be mad
11、e of borosilicate glass conforming tothe requirements of Type I,Class A of Specification E438.4.2 Maximum residual thermal stress shall conform toSpecification E671.5.Appearance5.1 The general appearance of the flasks shall conform toFig.1.6.Design6.1 Necks on all flasks shall be circular in cross s
12、ections,and center necks shall be perpendicular to center of flask body.6.2 Top shall be strengthened and finished.Top finishesshall be either beaded,tooled or standard taper.(The lattercomplies with Specification E676.)6.3 Wall thickness minimums are shown in Table 1.6.4 The flasks shall be spheric
13、al in shape to the point ofjunction with the flask necks.7.Capacity and Dimensions7.1 The nominal capacity of a flask shall not exceed theactual capacity to the base of the neck.Dimensions shallconform to the requirements of Table 1.8.Markings8.1 Each flask shall be permanently marked with the nameo
14、r known trademark of the manufacturer and the nominalcapacity.If applicable,the standard taper joint size shall bemarked on each flask.8.2 There shall be an area on one side of the flask formarking with a pencil.9.Sampling9.1 Refer to Specification E115710.Packaging10.1 Select from Specifications E9
15、20,E921,or E1133.11.Keywords11.1 boiling;distilling;flasks;glass;mult.neckASTM 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 o
16、f 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 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 there
