1、Designation: E732 80 (Reapproved 2018)Standard Specification forDisposable Pasteur-Type Pipet1This standard is issued under the fixed designation E732; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A nu
2、mber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers requirements for four types ofglass disposable bacteriological (Pasteur type) nonvolumetricpipets suitable for
3、replicate dispensing of drops of solutionsand suspensions for laboratory purposes.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 International Standards, Guide
4、s and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2E438 Specification for Glasses in Laboratory Apparatus3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 disposable pipetsin accorda
5、nce with this specifica-tion and the expected product performance expressed in thisstandard, those pipets which are to be used one time only. Anyinstitution or individual who reuses a disposable pipet mustbear full responsibility for its safety and effectiveness.4. Classification4.1 Pipets covered b
6、y this specification shall be of thefollowing types according to size:Type I534 in. (approximately 150 mm) longType II9 in. (approximately 230 mm) longType IIILarge-tip pipet 534 in. (approximately 150 mm)longType IVJumbo pipet 534 in. (approximately 150 mm) long5. Workmanship, Finish, and Appearanc
7、e5.1 The pipets shall be free of obstructions, visible defects,irregularities, striae, bubbles, and other defects that detractfrom appearance and impair their serviceability.5.2 The pipets shall be visibly clean and ready for use; freeof grease, dirt, grit, oil, or oily type substances readiblydetec
8、table to the naked eye under normal room lighting.5.3 Pipets shall be straight and concentric to the extent thatwhen rolled on a plane surface the tip of the pipet shall nottouch the surface.5.4 Pipets shall be of sufficient strength and uniformity ofwall thickness to withstand normal usage and tran
9、sporation.6. Requirements6.1 MaterialThe pipets shall be made of good quality,clear glass conforming to the requirements of Type I, Class Aor B (borosilicate), or Type II (soda lime), of SpecificationE438.6.2 Design and DimensionsThe pipets shall be of aone-piece glass construction and meet the dime
10、nsions andtolerance outlined in Table 1. The pipets may be fabricatedwith a constriction to allow for cotton-plugging, which shall beconsidered an optional feature at the discretion of the manu-facturer. The top of the pipet shall be fire-polished, free ofsharp edges, and be finished approximately 9
11、0 deg to the axisof the pipet. The tip of the pipet shall be cut approximately 90to the axis and shall not be cracked or have jagged ends orchips that enter the bore of the pipet.NOTE 1A manufacturer may at his option make claims of drops percubic centimetre on Type III, the large-tip pipet.7. Keywo
12、rds7.1 disposable; glass; pasteur; pipet1This 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 Jan. 1, 2018. Published January 2018. Originallyapproved
13、in 1980. Last previous edition approved in 2011 as E732 80 (2011) DOI:10.1520/E0732-80R18.2For 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 Sum
14、mary 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 Decision on Principle
15、s for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this stan
16、dard. 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 revie
17、wed 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 theresponsibl
18、e 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 Con
19、shohocken, 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
20、 photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 General Form of Glass Disposable Pasteur PipetsTABLE 1 DimensionsTypeOverall Length,mm ABody Length,mm BBody OutsideDiameter, mmBody WallThickness,min, mmDistance Top toConstriction,mm CInside Diameterof Tip, mmI 15010 985 7.00.5 0.50 25+0,5 1.10.4II 23010 985 7.00.5 0.50 25+0,5 1.10.4III 15010 1085 7.00.5 0.50 25+0,5 1.70.3IV 15010 955 9.50.5 0.50 N/A 1.50.5E732 80 (2018)2
