1、Designation: E 288 06Standard Specification forLaboratory Glass Volumetric Flasks1This standard is issued under the fixed designation E 288; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in par
2、entheses 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 requirements for glass volu-metric flask
3、s of precision and general-purpose grades suitablefor laboratory purposes.1.1.1 Class AEach flask of precision grade shall bemarked with the letter “A” to signify compliance with appli-cable construction and accuracy requirements. Flasks may bemarked with an identification number (serial number) at
4、theoption of the manufacturer.1.1.2 Class BGeneral purpose flasks are of the same basicdesign as Class A flasks. However, volumetric tolerances forClass B flasks shall be within twice the specified range allowedfor Class A flasks. These flasks need not be marked with theirclass designation.NOTE 1Spe
5、cifications for micro volumetric flasks in sizes from 1 mLto 25 mL, inclusive, are given in Specification E 237.NOTE 2The Twelfth General (International) Conference on Weightsand Measures redefined the litre as a “special name for the cubicdecimetre,” but agreed to permit continuance of the terms li
6、tre, millilitre,and mL, except in association with measurements of the highest precision.For volumetric glassware the difference between the old and newmeanings of litre is negligible. Therefore, either mL or cm3may bemarked on ware covered by this Specification.1.1.3 Product with a stated capacity
7、not listed in thisstandard may be specified class A tolerance when productconforms to the tolerance reange of the next smaller volumetricstandard product listed in Table 1.1.1.4 Wide MouthRequirements for insertion of tablet orcapsule for assay dilution and to accommodate access of largerdiameter pi
8、pets have created demand for introduction ofvolumetric flasks provided with larger opening. Product with astated capacity with a wider mouth, not previously listed in thisstandard, may be specified class A tolerance when productconforms to the tolerance range of the volumetric standardproduct listed
9、 in Table 2. In order to avoid confusion, wideneck flask tolerance must be marked on each flask as arequirement.2. Referenced Documents2.1 ASTM Standards:2E 237 Specification for Laboratory Glass MicrovolumetricVessels (Volumetric Flasks and Centrifuge Tubes)E 438 Specification for Glasses in Labora
10、tory ApparatusE 542 Practice for Calibration of Laboratory VolumetricApparatusE 675 Specification for Interchangeable Taper-GroundStopcocks And StoppersE 694 Specification for Laboratory Glass Volumetric Appa-ratusE 920 Specification for Commercially Packaged LaboratoryApparatusE 921 Specification f
11、or Export Packaged Laboratory Appa-ratusE 1133 Practice for Performance Testing of Packaged Labo-ratory Apparatus for United States Government Procure-mentsE 1157 Specification for Sampling and Testing of ReusableLaboratory Glassware3. General Requirements3.1 CalibrationFlasks shall be calibrated in
12、 accordancewith the methods outlined in Practice E 542.4. Design4.1 Flasks shall be designed in accordance with Specifica-tions E 438 and E 694. Flask necks may be designed witheither taper-ground joints to accept stopper sizes specified inTable 1 or they may have reinforced rims or screw threads fo
13、racceptance of cap style closures. The neck may be eitherstraight sided or provided with a mixing bulb located above thegraduation line (intermediate bulb style). Any cross section ofthe neck taken in a plane parallel to the base shall be circular;similar sections of the body shall be either circula
14、r or square.The shape shall permit complete emptying and thoroughcleaning. The bottom or base shall be such that the volumetricflask will stand solidly on a level surface. The area of the1This specification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct resp
15、onsibility of Subcommittee E41.01 onApparatus.Current edition approved April 1, 2006. Published May 2006. Originallyapproved in 1965 Last previous edition approved in 2003 as 288 03.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.o
16、rg. 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.bottom or base shall be of sufficient size so that the volumetri
17、cflask (except the 10-mL flask), when empty and withoutstopper, shall stand on an inclined plane of 15 to thehorizontal. The 10-mL flask shall stand on an inclined plane of10 to the horizontal.4.2 Intermediate Bulb Style FlasksThe bulb in the neck ofan Intermediate Bulb-style flask shall hold approx
18、imately 10 %of the nominal capacity for sizes up to 1000 mL, inclusive, and5 % of the nominal capacity for the 2000-mL size.4.3 StoppersWhere stoppers are provided they may beeither glass or plastic, as desired by the user. Stoppers shallprevent leakage of liquid when flask is inverted or shaken and
19、conform to Specification E 675.4.4 DimensionsFlasks shall conform to the essential di-mensions given in Table 1.4.5 MarkingsAll markings shall be permanent and leg-ible.4.5.1 Capacity LineThe capacity line shall be sharplydefined and of uniform width (maximum 0.6 mm) in a planeparallel to the base o
20、f the flask. The line shall be applied by oneof the following methods: etched and filled with a permanentpigment; engraved; etched or engraved through a verticalcolored stripe fused into the glass; by application of a stainfired into the glass without etching; by application of enamelwhich is fused
21、on the glass without etching. The line shallcompletely encircle the flask except when the line consists ofstain or enamel. If of stain or enamel, the line shall extend aminimum of 90 % of the neck circumference.4.5.2 Identification MarkingsEach flask, marked by oneof the methods given in 4.5.1 shall
22、 show the manufacturersname or trademark, the nominal capacity, the word “contains”or the symbol “TC,” and the temperature of calibration, that is,20C. Stoppers shall be marked with the identification of themanufacturer or seller and size; molded raised letters andnumbers may be used. In order to av
23、oid confusion, wide neckflask tolerance must be marked on each flask as a requirement.4.5.3 Laboratory Marking SpotEach flask shall have anarea roughened by blasting or enameled to provide a suitablearea for laboratory marking.5. Sampling and Testing5.1 For sampling and testing refer to Specificatio
24、n E 1157.6. Packaging6.1 For packaging select from one of Specification E 920,Specification E 921, or Practice E 1133.7. Keywords7.1 flasks; glass; volumetricTABLE 1 Requirements for Volumetric FlasksCapacity,mLClass ACapacityTolerance,6mLClass BCapacityTolerance,6mLMaximumInsideDiameterof Neck atCa
25、pacity Line,mmPosition of Capacity LineStopper SizeStraight-Neck StyleMinimum DistancefromIntermediate Bulb StyleMinimum DistancefromTop ofNeck,mmBody,mmMixingBulb,mmBody,mm5 0.02 0.04 8.25 22 5 . . 8 or 910 0.02 0.04 8.25 28 7 . . 925 0.03 0.06 8.25 35 7 . . 950 0.05 0.10 10.00 40 8 10 8 9100 0.08
26、0.16 12.30 40 10 10 10 13200 0.10 0.20 15.00 45 10 10 10 16250 0.12 0.24 15.00 45 10 10 10 16500 0.20 0.40 18.20 60 15 10 10 191000 0.30 0.60 20.00 60 15 10 10 222000 0.50 1.00 25.50 60 15 10 15 27TABLE 2 Requirements for “Wide Mouth” Volumetric FlasksCapacity,mLClass ACapacityTolerance,6mLClass BCa
27、pacityTolerance,6mLMaximumInsideDiameterof Neck atCapacity Line,mmPosition of Capacity LineStopper SizeStraight-Neck StyleMinimum DistancefromIntermediate Bulb StyleMinimum DistancefromTop ofNeck,mmBody,mmMixingBulb,mmBody,mm5 0.08 0.16 13.0 22 5 . . 1310 0.08 0.16 13.0 28 7 . . 1325 0.08 0.16 13.0
28、35 7 . . 1350 0.08 0.16 13.0 40 8 10 8 13100 0.10 0.20 15.0 40 10 10 10 16200 0.20 0.40 18.5 45 10 10 10 19250 0.20 0.40 18.5 45 10 10 10 19E288062ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users o
29、f 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 reviewed every fiv
30、e 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 theresponsible technical c
31、ommittee, 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 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).E288063
