1、Designation: E 1095 99 (Reapproved 2005)Standard Specification forCommon Laboratory Glass Funnels1This standard is issued under the fixed designation E 1095; 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers common laboratory or fi
3、lterfunnels, and filling or powder funnels for general laboratoryuse.2. Referenced 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 920 Specification for Co
4、mmercially Packaged LaboratoryApparatusE 921 Specification for Export Packaged Laboratory Appa-ratusE 1133 Practice for Performance Testing of Packaged Labo-ratory Apparatus for United States Government ApparatusE 1157 Specification for Sampling and Testing of ReusableLaboratory Glassware3. Classifi
5、cation3.1 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 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 Cla
6、ss 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 2Laboratory funnel with fluted inner wall. Theflutes are small grooves or depressions running upward fromthe bottom zone of the
7、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 inner wall.The ribs are small raised protuberances running from funnelrim toward the stem.3.1.3.1 Class A, (short stem)S
8、izes 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 60, 65, 75, 80,100, 125, and 150-mm diameters.4. Material and Annealing4.1 MaterialFunnels shall be made of glass confor
9、ming tothe requirement of Type 1, Class A or B or Type 2 ofSpecification E 438.4.2 AnnealingMaximum residual stress shall be such as toconform to Specification E 671.5. Design5.1 BowlThe inner wall of the bowl shall diverge from thestem at an angle of 30 6 1.2. The bowl shall be securelysealed to th
10、e 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 horizontal surface, as specified.5.1.1 Type 1Bowl of common funnels shall be plain.5.1.2 Type 1, Class CBottom of bowl s
11、hall 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 the bowl12to58 times the inner bowl depth.5.1.4 Type 3Bowl of ribbed funnel shall have an innerwall with raised ribs
12、 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 mm of this junction. Ribbed funnelsmay also have ribs on the outer bowl surface or stem, or both.1This specification
13、is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onApparatus.Current edition approved May 1, 2005. Published October 2005. Originallyapproved in 1986. Last previous edition approved in 1999 as E 1095 99.2For referenced AST
14、M 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoho
15、cken, PA 19428-2959, United States.If the outer bowl surface is ribbed, there must be at least threeribs evenly spaced around the bowl.5.2 Stem:5.2.1 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 polis
16、hed. 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 enough 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 b
17、e small enough so that the columnof filtrate will not break. (Both diameter requirements refer touse with water or dilute aqueous solutions.)5.2.2 Type 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 4T
18、he 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 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 fo
19、rthe type, class, and size specified.7. Markings7.1 Each funnel shall be permanently marked with the nameor known trademark of the manufacturer, or both.8. Sampling8.1 For sampling and testing refer to Specification E 11579. Packaging9.1 For packaging select from Specifications E 920, E 921,and Prac
20、tice E 1133.10. Keywords10.1 common; funnels; glass; laboratoryASTM 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 of any such
21、 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
22、 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 theresponsible technical committee, which you may attend. If you feel that your comments have not received a f
23、air 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 Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this s
24、tandard 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).TABLE 1 DimensionsStem Length Stem Outer DiameterNominalInnerDiameterBodyWallThicknessTypes 1, 2, 36 5mmType 46 10 mmT
25、ypes 1, 2, 3max, (mm)Type 4max, (mm)Stem 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 . 1.6E 1095 99 (2005)2
