1、Designation: E890 94 (Reapproved 2015)Standard Specification forDisposable Glass Culture Tubes1This standard is issued under the fixed designation E890; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber 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 the requirements for dispos-able glass tubes suitable for general testing and culturingapplications in blood b
3、anks, hematology, bacteriology,virology, 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 only.
4、 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 E920 or E921 or Practice E1133.2. Referenced Documents2.1 ASTM Standards:2C148 Test Methods fo
5、r Polariscopic Examination of GlassContainersE438 Specification for Glasses in Laboratory ApparatusE671 Specification for Maximum Permissible Thermal Re-sidual Stress in Annealed Glass Laboratory ApparatusE920 Specification for Commercially Packaged LaboratoryApparatusE921 Specification for Export P
6、ackaged Laboratory Appa-ratusE1133 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(borosilicate glass) or
7、Type II (soda-lime glass) of Specifica-tion E438.4. 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 end of the tube
8、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 % of the side wal
9、l 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 E671.4.5 WorkmanshipThe glass tube shall be free of defectsthat impair serviceability. The glass tube shall be transparent,clean, dry, a
10、nd 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 specification is under t
11、he jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onLaboratory Ware and Supplies.Current edition approved June 1, 2015. Published July 2015. Originally approvedin 1982. Last previous edition approved in 2009 as E890 94(2009). DOI:10.
12、1520/E0890-94R15.2For 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 Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbo
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18、od Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1Maximum deviation from hemispherical shall not exceed18 % of outside diameter.FIG. 1 Disposable Glass Culture TubeTABLE 1 Dimensional Limits for Glass Disposable Culture TubesNominalSize, mmExternalDiameter, mmWall Thick-ness, mmOverallLength
19、, 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 153E890 94 (2015)2
