1、May 2016 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 71.040.20!%UVp“2505177www.din.deDIN
2、EN ISO 384Laboratory glass and plastics ware Principles of design and construction of volumetric instruments (ISO 384:2015);English version EN ISO 384:2015,English translation of DIN EN ISO 384:2016-05Laborgerte aus Glas oder Kunststoff Grundlagen fr Gestaltung und Bau von Volumenmessgerten (ISO 384
3、:2015);Englische Fassung EN ISO 384:2015,Englische bersetzung von DIN EN ISO 384:2016-05Matriel de laboratoire en verre ou en plastique Principes de conception et de construction dinstruments volumtriques (ISO 384:2015);Version anglaise EN ISO 384:2015,Traduction anglaise de DIN EN ISO 384:2016-05Su
4、persedesDIN ISO 384:1978-12www.beuth.deDocument comprises 23 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.05.16 DIN EN ISO 384:2016-05 2 A comma is used as the decimal marker. National foreword This standard (EN ISO 384:2015
5、) has been prepared by Technical Committee ISO/TC 48 “Laboratory equipment” and has been adopted as European Standard EN ISO 384:2015 by Technical Committee CEN/TC 332 “Laboratory equipment”. Both secretariats are held by DIN, Germany. The responsible German body involved in its preparation was DIN-
6、Normenausschuss Laborgerte und Laboreinrichtungen (DIN Standards Committee Laboratory Devices and Installations), Working Committee NA 055-01-08 AA Volumenmessgerte. This standard has been published in agreement with the Physikalisch-Technische Bundesanstalt (PTB) (German Federal Institute for Scien
7、ce and Technology) Braunschweig and Berlin. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 383 DIN 12242-1 ISO 4787 DIN EN ISO 4787 ISO 4803 DIN 12217 ISO/IEC Guide 99 International vocabulary of metrology (VIM) Amendments This standar
8、d differs from DIN ISO 384:1978-12 as follows: a) the scope of the standard has been extended to include volumetric instruments made from plastics; b) volumetric instruments of class AS have been added; c) the thickness of graduation lines has been modified; d) the basic principles for construction
9、have been modified to comply with the product standards ISO 1042, ISO 648, ISO 835, ISO 385, ISO 4788 and ISO 4787; e) the relation between maximum permissible error and the inner diameter has been specified by an equation; f) Annex A explaining that relation has been revised. Previous editions DIN
10、ISO 384: 1978-12 DIN EN ISO 384:2016-05 3 National Annex NA (informative) Bibliography DIN 12217, Laboratory glassware Tubes made of borosilicate glass 3.3 DIN 12242-1, Laboratory glassware Interchangeable conical ground joints Dimensions, tolerances DIN EN ISO 4787, Laboratory glassware Volumetric
11、instruments Methods for testing of capacity and for use ISO/IEC Guide 99, International vocabulary of metrology Basic and general concepts and associated terms (VIM) DIN EN ISO 384:2016-05 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 384 December 2015 I
12、CS 17.060 English Version Laboratory glass and plastics ware - Principles of design and construction of volumetric instruments(ISO384:2015) Matriel de laboratoire en verre ou en plastique - Principes de conception et de construction dinstruments volumtriques (ISO 384:2015) Laborgerte aus Glas oder K
13、unststoff - Grundlagen fr Gestaltung und Bau von Volumenmessgerten(ISO 384:2015) This European Standard was approved by CEN on 16 November 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a
14、national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A
15、 version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cypr
16、us, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kin
17、gdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 38
18、4:2015 EEuropean foreword .31 Scope . 52 Normative references 53 Terms and definitions . 54 Unit of volume and reference temperature 54.1 Unit of volume . 54.2 Reference temperature 55 Volumetric accuracy 56 Methods of calibration and use . 67 Construction 77.1 Material . 77.2 Wall thickness 77.3 Sh
19、ape . 77.4 Capacity . 77.5 Stability 77.6 Delivery jets . 77.7 Stoppers 87.8 Stopcocks or similar devices . 88 Linear dimensions 89 Graduation lines 910 Scales . 1010.1 Spacing of graduation lines . 1010.2 Length of graduation lines (see Figure 2) . 1010.2.1 General. 1010.2.2 Graduation pattern l 10
20、10.2.3 Graduation pattern II 1010.2.4 Graduation pattern IIl . 1010.2.5 Special cases . 1110.3 Sequence of graduation lines (see Figure 1) 1110.4 Position of graduation lines (see Figure 2) . 1211 Figuring of graduation lines 1312 Marking .1413 Visibility of graduation lines, figures and inscription
21、s .14Annex A (normative) Maximum permissible error in relation to the inner diameter at the meniscus 16Bibliography .19Contents PageDIN EN ISO 384:2016-05 EN ISO 384:2015 (E)2Foreword . 4European foreword This document (EN ISO 384:2015) has been prepared by Technical Committee ISO/TC 48 “Laboratory
22、equipment“ in collaboration with Technical Committee CEN/TC 332 “Laboratory equipment” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2016, and confl
23、icting national standards shall be withdrawn at the latest by June 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to
24、the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
25、 Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 384:2015 has been approved by CEN as EN ISO 384:2015 without any
26、modification. DIN EN ISO 384:2016-05 EN ISO 384:2015 (E)3 ForewordISO (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 committee
27、s. 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 Inter
28、national Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the diff
29、erent types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shal
30、l not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is
31、 information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT)
32、see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 48, Laboratory equipment.This second edition cancels and replaces the first edition (ISO 384:1978), which has been technically revised to incorporate the following modifications.a) Volume
33、tric instruments made from plastics have been added to the scope.b) Volumetric instruments of class AS have been added.c) The thickness of graduation lines has been modified.d) The basic principles for construction have been modified such that they comply with the product standards ISO 1042, ISO 648
34、, ISO 835, ISO 385, ISO 4788 and ISO 4787.e) The relation between maximum permissible error and the inner diameter has been specified by an equation.f) Annex A, explaining that relation, has been reworded.DIN EN ISO 384:2016-05 EN ISO 384:2015 (E)4 1 ScopeThis International Standard sets out princip
35、les for the design of volumetric instruments manufactured from glass or from plastics in order to facilitate the most reliable and convenient use to the intended degree of accuracy.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are
36、 indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 383, Laboratory glassware Interchangeable conical ground jointsISO 4787, Laboratory glassware Volumet
37、ric instruments Methods for testing of capacity and for useISO/IEC Guide 99, International vocabulary of metrology Basic and general concepts and associated terms (VIM)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO/IEC Guide 99 apply.4 Unit of volume
38、 and reference temperature4.1 Unit of volumeThe unit of volume shall be the millilitre (ml), which is equivalent to one cubic centimetre (cm3).4.2 Reference temperatureThe standard reference temperature, i.e. the temperature at which the volumetric instrument is intended to contain or deliver its vo
39、lume (capacity), shall be 20 C.When the volumetric instrument is required for use in a country which has adopted a standard reference temperature of 27 C, this figure shall be substituted for 20 C.NOTE The capacity of volumetric instruments varies with change of temperature. A volumetric instrument
40、which was adjusted at 20 C, but used at 27 C or vice versa, would show an extra error of only 0,007 % if it is made of borosilicate glass having a coefficient of cubic thermal expansion of 9,9 106C1and of 0,02 % if it is made of soda-lime glass having a coefficient of cubic thermal expansion of 27 1
41、06C1. These errors are smaller than the limits of error for most volumetric instruments. It follows, therefore, that the reference temperature is of minor importance in practical use when dealing with glassware. However, when performing calibrations, it is important to refer to the reference tempera
42、ture, especially when considering volumetric plastic ware.5 Volumetric accuracy5.1 There are two classes of accuracy:DIN EN ISO 384:2016-05 EN ISO 384:2015 (E)5 the higher grade shall be designated “class A” or “class AS”; the lower grade shall be designated “class B”.5.2 The maximum permissible err
43、or shall be specified for each type of volumetric instrument in regard to the method and purpose of use and the class of accuracy.5.3 The numerical values of maximum permissible error for volumetric instruments for general purposes shall be preferably chosen from the series 10 12 15 20 25 30 40 50 6
44、0 80, or a suitable decimal multiple thereof.NOTE This series of preferred numbers has been adopted because decimal sub-multiples of some of the unrounded numbers, for example 31,5, would appear to imply a degree of precision which is not intended and which could not be measured in practice.5.4 The
45、maximum permissible error specified for a series of sizes of a volumetric instrument should provide a reasonably uniform progression in relation to capacity.5.5 The maximum permissible error permitted for class B should, in general, be approximately twice as permitted for class A or AS.5.6 For volum
46、etric instruments having a scale, the maximum permissible error for either class of accuracy shall not exceed the volume equivalent (see Annex A) of the smallest scale division.5.7 The maximum permissible error MPE for class A or AS depends on the internal diameter D (in millimetres) at the related
47、graduation line and shall not be smaller than derived by Formula (1):MPE+pi404 0012DD(, ,) (1)The corresponding class B limit shall be derived in accordance with 5.5.NOTE The above formula applies for the most common volumetric instruments which have a circular cross-section, but may be transferred
48、to non-circular cross-sections as well. See Annex A.5.8 In addition to 5.7, the maximum permissible error specified for any volumetric instrument designed to deliver shall also be not less than four times the standard deviation determined experimentally by an experienced operator from a series of at least 10 consecutive determinations of delivered capacity on the same volumetric instrument, carried out strictly in accordance with the method specified for this volumetric instrument in
