1、Designation: E 1406 95 (Reapproved 2005)Standard Specification forLaboratory Glass Filter Flasks1This standard is issued under the fixed designation E 1406; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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. R
3、eferenced Documents2.1 ASTM Standards:2E 438 Specification for Glasses in Laboratory ApparatusE 671 Specification for Maximum Permissible Thermal Re-sidual Stress in Annealed Glass Laboratory ApparatusE 676 Specification for Interchangeable Taper-GroundJointsE 920 Specification for Commercially Pack
4、aged LaboratoryApparatusE 921 Specification for Export Packaged Laboratory Appa-ratusE 1133 Practice for Performance Testing of Packaged Labo-ratory Apparatus for Specialized ProcurementsE 1157 Specification for the Sampling and Testing of Reus-able Laboratory Glassware3. Classification3.1 Filtering
5、 flasks shall 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 2Wit
6、h threaded side-arm in capacities 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
7、 3Two 45 % angle side-arm, in capacities of500, 1000, and 2000 mL.NOTE 1The 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 Manufactu
8、ring4.1 Flasks shall be made of borosilicate glass conforming tothe requirement of Type I, Class A of Specification E 438.4.2 Maximum residual thermal stress shall be such as toconform to Specification E 671.5. Workmanship, Finish, and Appearance5.1 The general appearance of the flasks shall be as i
9、llus-trated in Fig. 1.6. Design6.1 Conical flasks shall have flat 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 Tabl
10、e 1.6.2 Neck finish shall be strengthened and may be tapered orcylindrical or, alternatively, it may be manufactured with aninterchangeable taper-ground joint of appropriate size (seeSpecification E 676).6.3 Side-arm or Type II and III shall be located above orstraddling the neck to body juncture. I
11、t shall be locatedsufficiently below the top finish to avoid blockage by aninserted 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)shall be capable of accepting rubber tubing (see Fig. 1).6.3.1.2 Type IIClass 2 side-arms shall be threa
12、ded so as toaccept a threaded connector designed to accept rubber tubing(see Fig. 1).6.3.2 Type III shall be designed to accept a neoprenegrommet which in turn accepts a replaceable side-arm.1This specification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct
13、responsibility of Subcommittee E41.01 onApparatus.Current edition approved May 5, 2005. Published November 1005. Originallyapproved in 1991. Last previous edition approved in 1999 as E 1406 95(1999).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service
14、 at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.3.2.1 Type III, Class 1, shall have a replace
15、able glassside-arm that fits within the grommet, 90 from the axis of theflask.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 II
16、I, Class 2except to have a second neoprene grommet and polypropyleneside-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
17、-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. Sampling and Testing9.1 Refer to Specific
18、ation E 1157.10. Product Markings10.1 Each flask shall be permanently marked with the nameor known trademark of the manufacturer and the nominalcapacity. Flasks may also be marked with approximate gradu-ation markings that have a limit of error of 65 % of fullcapacity.10.2 There shall be an area on
19、one side of the flask formarking with a pencil.11. Packaging11.1 Refer to either Specification E 920, SpecificationE 921, or Practice E 1133.12. Keywords12.1 flasks; filtering; glass; laboratoryFIG. 1 General Appearance of Glass Filter FlasksTABLE 1 Capacity and DimensionsCapacity,mLBodyOutsideDiame
20、terWidestDiameter,max, mmOverallHeightmax, mmRubberStopperSize (neck)WallThicknessBottom andHeelmin, mmBase/HeelRadiusmin, mm25 41 77 3 1.0 650 52 85 4 1.5 6125 71 115 5 1.5 12250 86 160 6 1.8 12500 108 190 7 2.0 151000 138 245 8 2.0 202000 170 305 9 2.5 234000 210 385 12 3.0 26E 1406 95 (2005)2ANNE
21、X(Mandatory Information)A1. HYDRAULIC EXTERNAL PRESSURE TESTSA1.1 The filter flask should be tested in a pressure vesselconnected to a suitable water supply and fitted with a pressuregage of appropriate range. Alternatively, pressure may beapplied by means of a ram pump connected to a water reservoi
22、rwith a release valve discharging back to the reservoir. Asuitable arrangement is shown in Fig. A1.1. Quick-actionfastening for the lid of the pressure vessel is desirable to avoidwaste of time in tightening ordinary nuts and bolts.A1.2 The filter flask shall be closed by appropriate means,for examp
23、le stoppers. To ensure submersion, it is necessary tohold the filter flask in some suitable device or, alternatively,weights wrapped in paper or cloth may be placed inside it.A1.3 After the filter flask is placed in position and the lidfastened the pressure vessel shall be filled with water, and the
24、pressure brought up to 29-lb gage pressure, and maintained atthat pressure for 1 min.A1.4 A test of this duration indicates that a vessel passingit could be expected to withstand indefinitely a pressuredifferential (external-internal) of 14.5 lb provided that the glassis not abraded, bruised, or oth
25、erwise damaged in subsequentservice.A1.5 Nevertheless, when the flask is in use, precautionsagainst its collapse under pressure should be observed.E 1406 95 (2005)3ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this
26、standard. Users of this standard are expressly advised that determination of the validity 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 r
27、eviewed 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 therespon
28、sible 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
29、 Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).FIG. A1.1 Hydraulic Test Rig for Filter FlasksE 1406 95 (2005)4
