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1、INTERNATIONAL STANDARD ISO 4142 Second edition 2002-08-15 Reference number ISO 4142:2002(E) ISO 2002 Laboratory glassware Test tubes Verrerie de laboratoire Tubes essais Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards
2、1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4142:2002(E) ii ISO 2002 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printe
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5、uitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
6、any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mai
7、l copyrightiso.ch Web www.iso.ch Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from I
8、HS -,-,- ISO 4142:2002(E) ISO 2002 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committ
9、ees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Int
10、ernational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bo
11、dies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for
12、identifying any or all such patent rights. International Standard ISO 4142 was prepared by Technical Committee ISO/TC 48, Laboratory glassware and related apparatus, Subcommittee SC 2, General laboratory glassware (other than measuring apparatus). This second edition cancels and replaces the first e
13、dition (ISO 4142:1997) by incorporating the following changes: a)culture tubes have been deleted; b)the material has been more precisely specified; c)three types of test tubes have been introduced; d)additional series and nominal sizes have been added. Copyright International Organization for Standa
14、rdization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with IS
15、O Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 4142:2002(E) ISO 2002 All rights reserved 1 Laboratory glassware Test tubes 1Scope This International Standard spec
16、ifies a range of test tubes, suitable for general laboratory use, fabricated from borosilicate, neutral or soda/lime glass, which are designated Type I, Type II and Type III respectively. 2Normative references The following normative documents contain provisions which, through reference in this text
17、, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most rece
18、nt editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 695, Glass Resistance to attack by a boiling aqueous solution of
19、 mixed alkali Method of test and classification ISO 719, Glass Hydrolytic resistance of glass grains at 98 C Method of test and classification ISO 1776:1985, Glass Resistance to attack by hydrochloric acid at 100 C Flame emission or flame atomic absorption spectrometric method ISO 3585, Borosilicate
20、 glass 3.3 Properties ISO 4803, Laboratory glassware Borosilicate glass tubing 3Classification and designation The following three types of test tubes are specified. Type I test tubes (borosilicate glass) are suitable for most usual laboratory applications. They will stand most temperatures commonly
21、 used, including boiling of samples. These test tubes are highly chemically resistant. Type II test tubes (neutral glass) are suitable for many less demanding applications, and will withstand moderate warming, e. g. in a water bath, and/or moderate temperature change. They should not be taken from t
22、he cold and placed directly into the hottest part of the flame without being preheated. Type II test tubes are chemically resistant and are suitable for use with samples which are susceptible to pH changes. Type III test tubes (soda/lime glass) are suitable for general mixing and simple laboratory w
23、ork, and will withstand moderate warming, e. g. in a water bath, and/or moderate temperature change. They should not be placed into naked flames. Their chemical resistance is limited. These type numbers are specific to this International Standard and should not be confused with similar numbering use
24、d in the hydrolytic resistance classification. If a designation of test tubes is required, this shall be by reference to this International Standard ISO 4142, together with the type designation, the nominal size and the wall thickness of the test tube. Copyright International Organization for Standa
25、rdization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4142:2002(E) 2 ISO 2002 All rights reserved EXAMPLEFor a test tube Type I with a nominal s
26、ize of and a medium wall thickness of , the designation would be as follows: Test tube ISO 4142-1075-M 4Material 4.1Test tubes shall be of clear glass as free as possible from visible defects and internal stress. 4.2Type I test tubes shall be manufactured from borosilicate glass in accordance with I
27、SO 3585 and ISO 4803, with coefficient of thermal expansion of . 4.3Type II test tubes shall be manufactured from neutral glass as specified by the manufacturer. Typically the coefficient of thermal expansion will be . 4.4Type III test tubes shall be manufactured from soda/lime glass as specified by
28、 the manufacturer. Typically the coefficient of thermal expansion will be . 4.5Water resistance shall be in accordance with ISO 719, alkali resistance in accordance with ISO 695 and acid resistance in accordance with ISO 1776. The resistance classes of the glass types shall comply with Table 1. 5Con
29、struction and dimensions 5.1The top (open end) of each test tube shall be smoothly finished at right angles to the axis, with either a rim or a fire-polished end. 5.2Dimensions shall be in accordance with the lengths, diameters and tolerances shown in the Table 2 to Table 4. 5.3The bottom of each te
30、st tube shall be essentially hemispherical, with a wall thickness of no less than and no more than of the nominal side wall thickness. 6Marking 6.1Each Type I test tube shall be marked to clearly indicate that it is manufactured from borosilicate glass with a coefficient of thermal expansion of , e.
31、g. “boro 3.3”. The manufacturers or vendors name or mark may also be applied to each test tube. 6.2In the case of Type II and Type III test tubes, the appropriate information may be on the packaging only. Table 1 Minimum requirements for chemical resistance Property Minimum requirement Type IType II
32、Type III Water resistanceClass HGB 1Class HGB 1Class HGB 3 Acid resistance Na2Oa Na2Oa Alkali resistanceClass A2Class A2Class A2 a See clause 9 in ISO 1776:1985. 10 mm75 mm1,0 mm 3,3106K1 5,0106K1 9,1106K1 ?100g?100g 67 % 167 % 3,3106K1 Copyright International Organization for Standardization Provid
33、ed by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4142:2002(E) ISO 2002 All rights reserved 3 Table 2 Type I test tubes, made from borosilicate glass 3.3 Di
34、mensions in millimetres Nominal sizeLengthExternal diameterWall thickness MediumHeavy Series 1 75 75 125 150 150 150 Series 2 100 100 100 100 150 160 180 180 200 Table 3 Type II test tubes, made from neutral glass Dimensions in millimetres Nominal sizeLengthExternal diameterWall thickness Series 1 7
35、510 7512 12516 15018 015020 15024 Series 2 10010 10012 10013 10016 15016 16016 18018 18020 20024 20,5 1075100,151,00,041,50,1 1275120,21,00,041,50,1 16125160,21,20,051,80,1 18150180,21,20,051,80,1 20150200,251,20,051,80,1 24150240,251,20,051,80,1 10100100,151,00,041,50,1 12100120,21,00,041,50,1 1310
36、0130,21,00,041,50,1 16100160,21,20,05 16150160,21,20,051,80,1 16160160,21,20,05 18180180,21,20,05 20180200,251,20,051,80,1 24200240,251,20,051,80,1 20,5 10751,00,04 12751,00,04 161251,20,04 181501,20,04 20151,20,05 241501,20,05 101001,00,04 121001,00,04 131001,00,04 161001,20,04 161501,20,04 161601,
37、20,04 181801,20,04 201801,20,05 242001,20,05 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- IS
38、O 4142:2002(E) 4 ISO 2002 All rights reserved Table 4 Type III test tubes, made from soda lime glass Dimensions in millimetres Nominal sizeLengthLight wallMedium wall External diameterWall thicknessExternal diameterWall thickness Series 1 75 75 125 150 150 150 Series 2 100 100 100 100 a 150 160 a 18
39、0 200 a Or . 2 1075100,20,60,04100,251,00,05 1275120,20,60,04120,251,00,05 16125160,20,60,04160,251,00,05 18150180,20,60,04180,251,00,05 20150200,30,80,05200,51,20,05 24150240,30,80,05240,51,20,05 10100100,20,60,04100,251,00,05 12100120,20,60,04120,251,00,05 13100130,20,60,04130,251,00,05 16100160,2
40、0,60,04160,251,00,05 16150160,20,60,04160,251,00,05 16160160,20,60,04160,251,00,05 20180200,30,80,05200,51,20,05 24200240,30,80,05240,51,20,05 0,80,05 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not fo
41、r Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproductio
42、n or networking permitted without license from IHS -,-,- ISO 4142:2002(E) ICS 71.040.20 Price based on 4 pages ISO 2002 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:53:54 MDTNo reproduction or networking permitted without license from IHS -,-,-