1、Designation:E140695(Reapproved 2016)Standard Specification forLaboratory Glass Filter Flasks1This standard is issued under the fixed designation E1406;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、 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 filtering flasks suitable for general labo-ratory use.2.Referenced Docum
3、ents2.1 ASTM Standards:2E438 Specification for Glasses in Laboratory ApparatusE671 Specification for Maximum Permissible Thermal Re-sidual Stress in Annealed Glass Laboratory ApparatusE676 Specification for Interchangeable Taper-Ground JointsE920 Specification for Commercially Packaged LaboratoryApp
4、aratusE921 Specification 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 Filtering flasks shall
5、be in the following types andcapacities:3.1.1 Type IPlain,heavy wall,in capacities of 250,500,1000,2000,or 4000 mL.3.1.2 Type IIWith integral side-arm.3.1.2.1 Class 1With grooved or barbed side-arm in ca-pacities of 25,50,125,250,500,1000,2000,and 4000 mL.3.1.2.2 Class 2With threaded side-arm in cap
6、acities of125,250,500,1000,2000,and 4000 mL.3.1.3 Type IIIWith replaceable side-arm.3.1.3.1 Class 1Straight style,in capacities of 250,500,1000,2000,and 4000 mL.3.1.3.2 Class 245%angle side-arm,in capacities of 125,250,500,1000,2000,and 4000 mL.3.1.3.3 Class 3Two 45%angle side-arm,in capacities of50
7、0,1000,and 2000 mL.NOTE1The term millilitre(mL)is commonly used as a special namefor the cubic centimetre(cm3)and similarly the liter(L)for 1000 cubiccentimetres,in accordance with the International System of Units(SI).4.Material and Manufacturing4.1 Flasks shall be made of borosilicate glass confor
8、ming tothe requirement of Type I,Class A of Specification E438.4.2 Maximum residual thermal stress shall be such as toconform to Specification E671.5.Workmanship,Finish,and Appearance5.1 The general appearance of the flasks shall be as illus-trated in Fig.1.6.Design6.1 Conical flasks shall have flat
9、 bottoms.However,con-cavity in the bottom shall be permitted.The flasks shall standvertically without rocking or spinning when placed on a levelsurface.Bottom heel radius shall be smooth and shall be notless than that given in Table 1.6.2 Neck finish shall be strengthened and may be tapered orcylind
10、rical or,alternatively,it may be manufactured with aninterchangeable taper-ground joint of appropriate size(seeSpecification E676).6.3 Side-arm or Type II and III shall be located above orstraddling the neck to body juncture.It shall be locatedsufficiently below the top finish to avoid blockage by a
11、ninserted stopper.6.3.1 Type II shall have an integral glass side-arm.6.3.1.1 Type IIClass 1 side-arms(grooved or barbed)shallbe capable of accepting rubber tubing(see Fig.1).6.3.1.2 Type IIClass 2 side-arms shall be threaded so as toaccept a threaded connector designed to accept rubber tubing(see F
12、ig.1).6.3.2 Type III shall be designed to accept a neoprenegrommet which in turn accepts a replaceable side-arm.6.3.2.1 Type III,Class 1,shall have a replaceable glassside-arm that fits within the grommet,90 from the axis of theflask.1This specification is under the jurisdiction of ASTM Committee E4
13、1 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onLaboratory Ware and Supplies.Current edition approved Sept.1,2016.Published September 2016.Originallyapproved in 1991.Last previous edition approved in 2016 as E1406 95(2016).DOI:10.1520/E1406-95R16.2For referenced AS
14、TM 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,West Conshohocken,PA
15、19428-2959.United States1 6.3.2.2 Type III,Class 2 shall have a replaceable polypro-pylene side arm that fits within the grommet initially at 90from the axis of the flask,but then bent at a 45 angle.6.3.2.3 Type III,Class 3 shall be like Type III,Class 2except to have a second neoprene grommet and p
16、olypropyleneside-arm located in the heel of the flask and in line with the firstside arm in the neck area.(This second opening must be closedduring filtration.)7.Capacity and Dimensions7.1 Conical filtering flasks shall conform to the require-ments of Table 1.8.Pressure Resistance8.1 Filter flasks shall be so constructed as to withstand apressure differential(external-internal)of 29 psi,or twice thepressure in normal use,when tested in accordance with the testmethod specified in Annex A1.9.Sampl
