1、Designation: E 890 94 (Reapproved 2004)Standard Specification forDisposable Glass Culture Tubes1This standard is issued under the fixed designation E 890; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the requirements for dispos-able glass tubes suitable for general testing and culturingapplications in bloo
3、d banks, hematology, bacteriology, virol-ogy, and tissue culture laboratories.1.2 For practical purposes, the word “disposable” accordingto this specification and expected product performance ex-pressed in this specification describes those disposable glassculture tubes that are to be used one time
4、only. Any institutionor individual who reuses a disposable glass culture tube mustbear full responsibility for its safety and effectiveness.1.3 For packaging standards, choose among the following:Specifications E 920 or E 921 or Practice E 1133.2. Referenced Documents2.1 ASTM Standards:2C 148 Test M
5、ethods for Polariscopic Examination of GlassContainersE 438 Specification for Glasses in Laboratory ApparatusE 671 Specification for Maximum Permissible Thermal Re-sidual Stress in Annealed Glass Laboratory ApparatusE 920 Specification for Commercially Packaged LaboratoryApparatusE 921 Specification
6、 for Export Packaged Laboratory Appa-ratusE 1133 Practice for Performance Testing of Packaged Labo-ratory Apparatus for United States Government Procure-ments3. Materials3.1 The disposable glass culture tubes shall be made of glassin accordance with the requirements of Type I, Class A or B(borosilic
7、ate glass) or Type II (soda-lime glass) of Specifica-tion E 438.4. Design4.1 The tubes shall be of one-piece construction in accor-dance with Fig. 1 for shape, and any cross section of the tube,taken in a plane perpendicular to the longitudinal axis, shallpreferably be circular.4.2 The top or open e
8、nd of the tube shall be smoothlyfire-polished at right angles to the horizontal axis of the tube.4.3 The bottom or closed end of the tube shall be completelyclosed and shall have a spherical radius inside and outside inaccordance with Fig. 1. The wall thickness in the bottom shallbe at least 6623 %
9、of the side wall thickness, but not more than210 % of the side wall thickness.4.4 Residual thermal stress shall not exceed 750 psi whendetermined in accordance with Specification E 671.4.5 WorkmanshipThe glass tube shall be free of defectsthat impair serviceability. The glass tube shall be transpare
10、nt,clean, dry, and reasonably free of foreign material, loose orembedded, lint, or stains when viewed under normal roomlighting with the unaided eye.4.6 DimensionsThe glass tubes shall be in accordancewith the dimensions given in Table 1.5. Keywords5.1 culture; disposable; glass; tubes1This specific
11、ation is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E 41.01 onApparatus.Current edition approved May 1, 2004. Published May 2004. Originallyapproved in 1982. Last previous edition approved in 1998 as E 890 94 (1998).2For refer
12、enced 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 ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West
13、 Conshohocken, PA 19428-2959, United States.ASTM 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 patent rights, and
14、 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 either for revisio
15、n 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 fair hearing you sho
16、uldmake 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 obta
17、ined 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).NOTE 1Maximum deviation from hemispherical shall not exceed18 % of outside diameter.FIG. 1 Disposable Glass Culture TubeTABLE 1 Dimension
18、al Limits for Glass Disposable Culture TubesNominalSize, mmExternalDiameter, mmWall Thick-ness, mmOverallLength, mm6 by 50 05.50 to 6.50 0.35 to 0.60 47.5 to 52.510 by 75 09.50 to 10.50 0.50 to 0.70 72 to 77.512 by 75 11.50 to 12.50 0.55 to 0.80 72 to 77.513 by 100 12.50 to 13.50 0.55 to 0.80 97 to 10316 by 100 15.45 to 16.50 0.65 to 0.90 122 to 12816 by 125 15.45 to 16.50 0.65 to 0.90 147 to 15316 by 150 15.45 to 16.50 0.65 to 0.90 147 to 15318 by 150 17.50 to 18.50 0.70 to 1.05 147 to 15320 by 150 19.50 to 20.50 0.80 to 1.10 147 to 153E 890 94 (2004)2
