1、Designation: E 1046 85 (Reapproved 2005)Standard Specification forGlass Westergren Tube, Disposable1This standard is issued under the fixed designation E 1046; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisi
2、on. A 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 a disposable tube used formeasuring the erythrocyte sedimentation rate, ESR (the sus-pension stability
3、 of red cells in diluted, anti-coagulated humanblood).1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.2. Referenced Documents2.1 ASTM Standards:2E 438 Specification for Glasses in Laboratory Apparatus3. Terminology3.1 Defini
4、tions of Terms Specific to This Standard:3.1.1 disposablein accordance with this specification andthe expected product performance expressed in this standard,those tubes which are to be used one time only. Any institutionor individual who resuses a disposable tube must bear fullresponsibility for it
5、s safety and effectiveness.3.1.2 Westergren3surname of the individual responsiblefor the design of the reusable Westergren tube and the methodof use for both reusable and disposable tubes.4. Classification4.1 This specification covers a tube that is intended to beused one time only. It is not to be
6、confused with a reusable tubethat is described in other published standards. The tubes shallbe of the following types:4.1.1 Type Istandard Westergren tube to be used inconventional racks only, and4.1.2 Type IIself-zeroing tubes to be used with racksdesigned with convenient disposable tube features.5
7、. Materials5.1 GlassThe tubes made to this specification shall befabricated from borosilicate glass, Type I, Class B, or soda limeglass, Type II, in accordance with Specification E 438.6. Physical Requirements6.1 Design, Type I and IIThe Westergren tube shall bemade of one-piece construction from tu
8、bing that is straight andof uniform bore. The ends of the tube shall be cut at rightangles to the axis of the tube and fire polished.6.1.1 Type II onlyEach tube shall have an absorbantcotton plug inserted in the tube with the bottom edge of theplug aligned with the 0 mm calibration line. The alignme
9、nt ofthe plug to the calibration line should not vary by more than1 mL. The plug must be capable of supporting a 200 mmvertical column of water when the plug has been thoroughlysoaked.NOTE 1With possible printing scale variation and cotton plug align-ment to the calibration line variation, the botto
10、m of the cotton plug is tobe located 200 6 1 mm from the bottom of the tube.6.2 WorkmanshipThe tube shall be free as possible fromvisible defects which would detract from its appearance orimpair its serviceability when viewed by the human eye undernormal room lighting. Self-zeroing tubes are to be u
11、sed withracks designed with convenient disposable tube features.6.3 DimensionsDimensions and tolerances shall be inaccordance with Fig. 1. The uniformity of the bore shall be60.15 mm throughout the tube. The tube shall have aninscribed graduated scale extending over the lower 200 61.0 mm of the tube
12、. The markers or vendors name or markshall be inscribed on the tube in a selected location. Inscriptionof the word “Westergren” on the tube is optional. Type II tubesmay be made of varied lengths from 230 to 243 mm long withthe selected length within this range confined to a 61mmtolerance.1This spec
13、ification is under the jurisdiction of ASTM Committee E41 onLaboratory Apparatus and is the direct responsibility of Subcommittee E41.01 onApparatus.Current edition approved Oct. 1, 2005. Published December 2005. Originallyapproved in 1985. Last previous edition approved in 2000 as E 1046 85 (2000)e
14、1.2For 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.3Westergren, A., “Studies of the Suspension Stability of th
15、e Blood in PilmonaryTuberculosis,” Acta Medica Scandinavia, 54, 19201921, pp. 247282.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.4 Graduation LinesThickness of graduation lines mayvary in uniformity but shall not exceed 0.4 mm
16、in thickness.They shall lie at right angles to the axis of the tube with amaximum tolerance between two adjacent markings of0.25 mm. Maximum tolerance for the total 200 mm scale shallnot exceed 1.0 mm.6.5 Graduation Line NumberingThe tube shall be gradu-ated in millimetres with a scale of 200 mm fro
17、m the tip of thetube. The tube shall be numbered every 10 or 20 graduationlines starting with a numerical zero (0) and downward to amaximum value of 180 or 190 mm. The numerical markingsshall appear at the right side of the graduated scale when heldvertically with the scale facing the viewer.7. Keyw
18、ords7.1 disposable; glass; tube; WestergrenASTM 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
19、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 revision
20、 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 shou
21、ldmake 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).E 1046 85 (2005)2
