1、Designation: E288 10 (Reapproved 2017)Standard Specification forLaboratory Glass Volumetric Flasks1This standard is issued under the fixed designation E288; 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 U.S. Department of Defense.1. Scope1.1 This specification covers requirements for gla
3、ss volu-metric flasks 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
4、 (serial number) at 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 d
5、esignation.NOTE 1Specifications for micro volumetric flasks in sizes from 1 mLto 25 mL, inclusive, are given in Specification E237.NOTE 2The Twelfth General (International) Conference on Weightsand Measures redefined the litre as a “special name for the cubicdecimetre,” but agreed to permit continua
6、nce of the terms litre, 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 Special Size
7、 FlasksPrecision grade flasks may bemanufactured with nominal capacities not listed in this stan-dard. Such flasks shall be considered “Class A” flasks, pro-vided they meet the accuracy tolerance of the next largest“Class A” flask appearing in Table 1 and comply with themarking requirements of 1.1.1
8、.1.1.4 Wide-Mouth FlasksRequirements for insertion oftablets or capsules for assay dilution and to accommodateaccess of larger diameter pipets require volumetric flasks withlarger necks. These flasks appear in Table 2. These flasks shallconform to the marking requirements of 1.1.1.Additionally, thea
9、ccuracy tolerance shall be marked on each “Class A” wide-mouth flask.1.1.5 Special Size Wide-Mouth FlasksPrecision gradewide-mouth flasks may be manufactured with nominal capaci-ties not listed in this standard. Such flasks shall be considered“Class A” flasks provided they meet the accuracy toleranc
10、e ofthe next largest “Class A” wide-mouth flask appearing in Table2 and the marking requirements of 1.1.4.1.2 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Intern
11、ational Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2E237 Specification for Laboratory Glass MicrovolumetricVessels (Volumetric Flasks and Centrifuge Tubes)E438 Specification for Gl
12、asses in Laboratory ApparatusE542 Practice for Calibration of Laboratory VolumetricApparatusE675 Specification for Interchangeable Taper-Ground Stop-cocks And StoppersE694 Specification for Laboratory Glass Volumetric Appa-ratusE920 Specification for Commercially Packaged LaboratoryApparatusE921 Spe
13、cification 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. General Requirements3.1 CalibrationFlasks shall be cal
14、ibrated in accordancewith the methods outlined in Practice E542.1This specification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onLaboratory Ware and Supplies.Current edition approved Nov. 1, 2017. Published December
15、2017. Originallyapproved in 1965. Last previous edition approved in 2010 as E288 10. DOI:10.1520/E0288-10R17.2For 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 sta
16、ndards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the De
17、cision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.14. Design4.1 Flasks shall be designed in accordance with Specifica-tions E438 and E694. Flask necks may be designed with
18、eithertaper-ground joints to accept stopper sizes specified in Table 1or they may have reinforced rims or screw threads foracceptance 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 secti
19、on ofthe neck taken in a plane parallel to the base shall be circular;similar sections of the body shall be either circular 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 ar
20、ea of thebottom or base shall be of sufficient size so that the volumetricflask (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 Flasks
21、The bulb in the neck ofan Intermediate Bulb-style flask shall hold approximately 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. Sto
22、ppers shallprevent leakage of liquid when flask is inverted or shaken andconform to Specification E675.4.4 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 sharplydefine
23、d and of uniform width (maximum 0.6 mm) in a planeparallel to the base of 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
24、 into the glass without etching; by application of enamelwhich is fused 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 Identificat
25、ion MarkingsEach flask, marked by oneof the methods given in 4.5.1 shall 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 selle
26、r and size; molded raised letters andnumbers may be used. In order to avoid 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.T
27、ABLE 1 Requirements for Volumetric FlasksCapacity,mLClass ACapacityTolerance,mLClass BCapacityTolerance,mLMaximumInsideDiameterof Neck atCapacity Line,mmPosition of Capacity LineStopper SizeStraight-Neck StyleMinimum DistancefromIntermediate Bulb StyleMinimum DistancefromTop ofNeck,mmBody,mmMixingBu
28、lb,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 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 2
29、22000 0.50 1.00 25.50 60 15 10 15 27TABLE 2 Requirements for “Wide Mouth” Volumetric FlasksCapacity,mLClass ACapacityTolerance,mLClass BCapacityTolerance,mLMaximumInsideDiameterof Neck atCapacity Line,mmPosition of Capacity LineStopper SizeStraight-Neck StyleMinimum DistancefromIntermediate Bulb Sty
30、leMinimum DistancefromTop ofNeck,mmBody,mmMixingBulb,mmBody,mm5 0.08 0.16 12.30 22 5 . . 1310 0.08 0.16 12.30 28 7 . . 1325 0.08 0.16 12.30 35 7 . . 1350 0.08 0.16 12.30 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 19E288 10 (2017)25. S
31、ampling and Testing5.1 For sampling and testing refer to Specification E1157.6. Packaging6.1 For packaging select from one of Specification E920,Specification E921, or Practice E1133.7. Keywords7.1 flasks; glass; volumetricASTM International takes no position respecting the validity of any patent ri
32、ghts asserted 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 an
33、y time by the 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 w
34、ill receive 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 A
35、STM 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 10 (2017)3
