1、Designation: E1095 99 (Reapproved 2010)Standard Specification forCommon Laboratory Glass Funnels1This standard is issued under the fixed designation E1095; 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 () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers common laboratory or filte
3、rfunnels, and filling or powder funnels for general laboratoryuse.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 Specific
4、ation for Maximum Permissible Thermal Re-sidual Stress in Annealed Glass Laboratory ApparatusE920 Specification for Commercially Packaged LaboratoryApparatusE921 Specification for Export Packaged Laboratory Appa-ratusE1133 Practice for Performance Testing of Packaged Labo-ratory Apparatus for United
5、 States Government Procure-mentsE1157 Specification for Sampling and Testing of ReusableLaboratory Glassware3. Classification3.1 There shall be four types of laboratory glass funnelsfurther divided into classes.3.1.1 Type 1Common laboratory funnel with smoothinner surface, divided into the following
6、 three classes:3.1.1.1 Class A, (short stem)Sizes 25, 35, 45, 55, 65, 75,90, 100, 125, and 150-mm diameters.3.1.1.2 Class B, (long stem)Sizes 35, 45, 50, 55, 65, 75,90, 100, 125, 150, 200, 250, and 300-mm diameters.3.1.1.3 Class C, (without stem)Sizes 50, 75, and 100-mmdiameters.3.1.2 Type 2Laborato
7、ry funnel with fluted inner wall. Theflutes are small grooves or depressions running upward fromthe bottom zone of the bowl.3.1.2.1 Class A, (short stem)Sizes 50, 65, 75, and100-mm diameters.3.1.2.2 Class B, (long stem)Sizes 50, 65, 75, and 100-mmdiameters.3.1.3 Type 3Laboratory funnel with ribbed i
8、nner wall.The ribs are small raised protuberances running from funnelrim toward the stem.3.1.3.1 Class A, (short stem)Sizes 50, 65, 75, and100-mm diameters.3.1.3.2 Class B, (long stem)Sizes 50, 65, 75, and 100-mmdiameters.3.1.4 Type 4Filling or powder funnels.3.1.4.1 Short, Wide Diameter StemSizes 6
9、0, 65, 75, 80,100, 125, and 150-mm diameters.4. Material and Annealing4.1 MaterialFunnels shall be made of glass conforming tothe requirement of Type 1, Class A or B or Type 2 ofSpecification E438.4.2 AnnealingMaximum residual stress shall be such as toconform to Specification E671.5. Design5.1 Bowl
10、The inner wall of the bowl shall diverge from thestem at an angle of 30 6 1.2. The bowl shall be securelysealed to the stem. The axis of the funnel bowl shall coincidewith the stem axis and the rim shall be perpendicular to thisaxis. The edge of the rim shall be mold finish, beaded orground to a hor
11、izontal surface, as specified.5.1.1 Type 1Bowl of common funnels shall be plain.5.1.2 Type 1, Class CBottom of bowl shall be ground flat.5.1.3 Type 2Bowl of fluted funnels shall have an innerwall with 8 equally spaced small grooves or depressions thatshall extend upward from the inner bottom zone of
12、 the bowl12to58 times the inner bowl depth.5.1.4 Type 3Bowl of ribbed funnel shall have an innerwall with raised ribs spaced at the rim approximately 15 mmapart.Alternate ribs shall extend to within approximately 6 mmof the junction of the bowl and the stem, and the others towithin approximately 19
13、mm of this junction. Ribbed funnels1This specification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onApparatus.Current edition approved Sept. 1, 2010. Published September 2010. Originallyapproved in 1986. Last previou
14、s edition approved in 2005 as E1095 99 (2005).DOI: 10.1520/E1095-99R10.2For 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 standards Document Summary page onthe AST
15、M website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.may also have ribs on the outer bowl surface or stem, or both.If the outer bowl surface is ribbed, there must be at least threeribs evenly spaced around the bowl.5.2 Stem:5.2.
16、1 Types 1, Class A and B; Type 2; and Type 3The stemshall have an oblique termination of not less than 30,smoothly ground to a level point or fire polished. The stemshall have parallel sides, or a straight taper if drawn out of thebowl. The diameter of the stem at the bowl juncture shall besmall eno
17、ugh so that the stem will fill readily but not so smallas to retard the rate of flow in ordinary filtrations. The diameterat the end of the stem shall be small enough so that the columnof filtrate will not break. (Both diameter requirements refer touse with water or dilute aqueous solutions.)5.2.2 T
18、ype 3Stem of Type 3 funnels may be ribbed on theouter wall. If so, the ribs must be diametrically opposed andextend the length of the stem.5.2.3 Type 4The stem shall end perpendicular to the stemwall and be smoothly ground or fire polished. The diameter ofthe stem shall be uniform and shall be large
19、 enough to permitrapid filling, also for use with dry powder or granular material.6. Dimensions6.1 Funnels shall conform to the dimensions in Table 1 forthe type, class, and size specified.7. Markings7.1 Each funnel shall be permanently marked with the nameor known trademark of the manufacturer, or
20、both.8. Sampling8.1 For sampling and testing refer to Specification E11579. Packaging9.1 For packaging select from Specifications E920, E921,and Practice E1133.10. Keywords10.1 common; funnels; glass; laboratoryASTM International takes no position respecting the validity of any patent rights asserte
21、d in connection with any item mentionedin this 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 th
22、e 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
23、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 Internat
24、ional, 100 Barr Harbor Drive, PO Box C700, West 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 t
25、he ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 DimensionsStem Length Stem Outer DiameterNominalInnerDiameterBodyWallThicknessTypes 1, 2, 36 5mmType 46 10 mmTypes 1, 2, 3max, (mm)Type 4max, (mm)Ste
26、m WallThicknessmin, (mm)BowlTop, (mm)min,(mm)Class A Class B25 1 40 . . 7 . 0.835 1 50 150 . 7 . 0.845 1 50 150 . 7 . 150 1 65 150 . 8 . 155 1 65 150 . 8 . 1.360 1 . . 30 8 14 1.365 1 65 150 30 8 16 1.375 1 75 150 30 8 18 1.380 1 . 150 30 8 18 1.390 1 95 150 . 10 . 1.3100 1.2 100 150 30 10 21 1.3125 1.2 70 or 100 150 35 16 26 1.3150 1.2 70 or 100 150 35 16 31 1.6200 1.5 . 150 . 20 . 1.6250 1.5 . 150 . 26 . 1.6300 1.5 . 150 . 32 . 1.6E1095 99 (2010)2
