EN ISO 4787:2010
(Main)Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010)
Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010)
ISO 4787:2010 provides methods for the testing, calibration and use of volumetric instruments made from glass in order to obtain the best accuracy in use.
The International Standards for the individual volumetric instruments (ISO 385, ISO 646, ISO 835, ISO 1042 and ISO 4788) include clauses on the definition of capacity; these clauses describe the method of manipulation in sufficient detail to define the capacity without ambiguity. ISO 4787:2010 contains supplementary information.
The procedures in ISO 4787:2010 are applicable to volumetric instruments with nominal capacities in the range of 0,1 ml to 10 000 ml. These include: single-volume pipettes (see ISO 648) without subdivisions; graduated measuring pipettes and dilution pipettes, with partial or complete subdivisions (see ISO 835); burettes (see ISO 385); volumetric flasks (see ISO 1042); and graduated measuring cylinders (see ISO 4788). The procedures are not recommended for testing of volumetric instruments with capacities below 0,1 ml such as micro-glassware.
ISO 4787:2010 does not deal specifically with pyknometers as specified in ISO 3507. However, the procedures specified for the determination of volume of glassware can, for the most part, also be followed for the calibration of pyknometers.
Laborgeräte aus Glas - Volumenmessgeräte - Prüfverfahren und Anwendung (ISO 4787:2010)
Diese Internationale Norm legt Verfahren für die Prüfung, Kalibrierung und Anwendung von Volumenmess-geräten aus Glas fest, um optimale Gebrauchsbedingungen zu erhalten.
ANMERKUNG Als Prüfung wird der Vorgang bezeichnet, mit dem die Konformität des einzelnen Volumenmessgeräts mit der zutreffenden Norm untersucht wird; die Prüfung gipfelt in der Ermittlung der Messabweichung an einem oder mehreren Punkten des Volumenmessgeräts.
Die Internationalen Normen für einzelne Volumenmessgeräte enthalten Abschnitte mit der Definition des Volu-mens; diese Abschnitte enthalten ausreichende Angaben zur Handhabung, so dass das Volumen zweifelsfrei bestimmt ist. Diese Internationale Norm enthält zusätzliche Angaben.
Die Prüfverfahren gelten für Volumenmessgeräte mit Nennvolumina von 0,1 ml bis 10 000 ml. Sie gelten für Vollpipetten ohne Skale (siehe ISO 648), für Messpipetten und Verdünnungspipetten mit teilweiser oder voll-ständiger Skale (siehe ISO 835), für Büretten (siehe ISO 385), für Messkolben (siehe ISO 1042) und für Messzylinder (siehe ISO 4788). Die Prüfverfahren werden nicht für die Prüfung von Volumenmessgeräten mit Nennvolumina kleiner 0,1 ml empfohlen, z. B. für Mikroglasgeräte.
Diese Internationale Norm behandelt keine Pyknometer nach ISO 3507. Jedoch können die hier festgelegten Verfahren für die Bestimmung des Volumens zum größten Teil auch für die Kalibrierung von Pyknometern angewendet werden.
Verrerie de laboratoire - Instruments volumétriques - Méthodes de vérification de la capacité et d'utilisation (ISO 4787:2010)
L'ISO 4787:2010 fournit des m�thodes de v�rification, d'�talonnage et d'utilisation des instruments volum�triques en verre, afin d'obtenir la meilleure exactitude possible lors de l'utilisation.
Les Normes internationales sp�cifiques � chaque instrument volum�trique (ISO 385, ISO 646, ISO 835, ISO 1042 et ISO 4788) comportent des articles d�finissant la capacit�; ces articles d�crivent la m�thode de manipulation de fa�on assez d�taill�e pour d�finir sans ambigu�t� la capacit�. La pr�sente Norme internationale contient des informations compl�mentaires.
Les modes op�ratoires de l'ISO 4787:2010 sont applicables � des instruments volum�triques dont les capacit�s nominales sont comprises entre 0,1 ml et 10 000 ml. Cela inclut les pipettes � un volume (voir l'ISO 648) non gradu�es, les pipettes gradu�es et les pipettes � dilution enti�rement ou partiellement gradu�es (voir l'ISO 835), les burettes (voir l'ISO 385), les fioles jaug�es (voir l'ISO 1042) et les �prouvettes gradu�es cylindriques (voir l'ISO 4788). Les modes op�ratoires ne sont pas conseill�s pour la v�rification d'instruments volum�triques dont les capacit�s sont inf�rieures � 0,1 ml, comme par exemple la micro-verrerie.
L'ISO 4787:2010 ne traite pas sp�cifiquement des pycnom�tres sp�cifi�s dans l'ISO 3507. Toutefois, les modes op�ratoires sp�cifi�s pour la d�termination du volume de la verrerie peuvent �galement en grande partie �tre suivis pour l'�talonnage des pycnom�tres.
Laboratorijska steklovina - Instrumenti za volumetrična merjenja - Metode za preskušanje zmogljivosti in uporaba (ISO 4787:2010)
Ta mednarodni standard zagotavlja metode za preskušanje, kalibracijo in uporabo instrumentov za volumetrična merjenja, izdelanih iz stekla, z namenom doseči najboljšo natančnost pri uporabi. Mednarodni standardi za posamezne instrumente za volumetrična merjenja zajemajo klavzule o določitvi zmogljivosti; te klavzule opisujejo metodo rokovanja v zadostnih podrobnostih, da določijo zmogljivost brez nejasnosti. Ta mednarodni standard vsebuje dodatne podatke. Postopki se uporabljajo za instrumente za volumetrična merjenja z nazivnimi zmogljivostmi v razponu od 0,1 ml to 10 000 ml. Le-te zajemajo: pipette z eno oznako volumna (glej ISO 648) brez podrazdelitve; graduirane merilne pipete in pipete za razredčevanje, z delnimi ali popolnimi razdelki (glej ISO 835); birete (glej ISO 385); merilne bučke (glej ISO 1042); in graduirane merilne valje (glej ISO 4788). Postopki se ne priporočajo za preskušanje instrumentov za volumetrična merjenja z zmogljivostjo pod 0,1 ml, kot je mikro-steklovina. Ta mednarodni standard ne obravnava posebej piknometrov, kot so opredeljeni v ISO 3507. Vendar pa postopki za določitev volumna steklovini, opredeljeni v nadaljevanju, lahko večinoma uporabijo za kalibracijo piknometrov.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Laborgeräte aus Glas - Volumenmessgeräte - Prüfverfahren und Anwendung (ISO 4787:2010)Verrerie de laboratoire - Instruments volumétriques - Méthodes de vérification de la capacité et d'utilisation (ISO 4787:2010)Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010)71.040.20Laboratorijska posoda in aparatiLaboratory ware and related apparatus17.060Merjenje prostornine, mase, gostote, viskoznostiMeasurement of volume, mass, density, viscosityICS:Ta slovenski standard je istoveten z:EN ISO 4787:2010SIST EN ISO 4787:2010en,fr01-junij-2010SIST EN ISO 4787:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 4787
April 2010 ICS 17.060 English Version
Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010)
Verrerie de laboratoire - Instruments volumétriques - Méthodes de vérification de la capacité et d'utilisation (ISO 4787:2010)
Laborgeräte aus Glas - Volumenmessgeräte - Prüfverfahren und Anwendung (ISO 4787:2010) This European Standard was approved by CEN on 15 March 2010.
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 national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4787:2010: ESIST EN ISO 4787:2010
Reference numberISO 4787:2010(E)© ISO 2010
INTERNATIONAL STANDARD ISO4787Second edition2010-04-15Laboratory glassware — Volumetric instruments — Methods for testing of capacity and for use Verrerie de laboratoire — Instruments volumétriques — Méthodes de vérification de la capacité et d'utilisation
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ii © ISO 2010 – All rights reserved
ISO 4787:2010(E) © ISO 2010 – All rights reserved iii Contents Page Foreword.iv 1 Scope.1 2 Normative references.1 3 Terms and definitions.2 4 Summary of method.2 5 Volume and reference temperature.2 5.1 Unit of volume.2 5.2 Reference temperature.2 6 Apparatus and calibration liquid.2 7 Factors affecting the accuracy of volumetric instruments.3 7.1 General.3 7.2 Temperature.3 7.3 Cleanliness of glass surface.3 7.4 Quality of used volumetric instruments.4 7.5 Delivery time and waiting time.4 8 Setting the meniscus.4 8.1 General.4 8.2 Meniscus of transparent liquids.4 8.3 Meniscus of opaque liquids.5 9 Calibration procedure.5 9.1 General.5 9.2 Test room.5 9.3 Filling and delivery.6 9.4 Weighing.7 9.5 Evaluation.7 10 Use.7 10.1 General.7 10.2 Volumetric flasks (see ISO 1042).8 10.3 Measuring cylinders (see ISO 4788).8 10.4 Burettes (see ISO 385).8 10.5 Pipettes.9 Annex A (informative)
Cleaning of volumetric glassware.10 Annex B (normative)
Calculation of volume.11 Bibliography.21
ISO 4787:2010(E) iv © ISO 2010 – All rights reserved 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 committees. 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 International 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 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4787 was prepared by Technical Committee ISO/TC 48, Laboratory equipment, Subcommittee SC 6, Laboratory and volumetric ware. This second edition cancels and replaces the first edition (ISO 4787:1984), which has been technically revised to incorporate the following changes: a) the potassium dichromate cleaning method in Annex A has been deleted; b) new tables for calculation of test results have been added to Annex B; c) the description of the test (calibration) methods has been modified to be more precise; d) test methods have been separated from recommendations for use.
INTERNATIONAL STANDARD ISO 4787:2010(E) © ISO 2010 – All rights reserved 1 Laboratory glassware — Volumetric instruments — Methods for testing of capacity and for use 1 Scope This International Standard provides methods for the testing, calibration and use of volumetric instruments made from glass in order to obtain the best accuracy in use. NOTE Testing is the process by which the conformity of the individual volumetric instrument with the appropriate standard is determined, culminating in the determination of its error of measurement at one or more points. The International Standards for the individual volumetric instruments include clauses on the definition of capacity; these clauses describe the method of manipulation in sufficient detail to define the capacity without ambiguity. This International Standard contains supplementary information. The procedures are applicable to volumetric instruments with nominal capacities in the range of 0,1 ml to 10 000 ml. These include: single-volume pipettes (see ISO 648) without subdivisions; graduated measuring pipettes and dilution pipettes, with partial or complete subdivisions (see ISO 835); burettes (see ISO 385); volumetric flasks (see ISO 1042); and graduated measuring cylinders (see ISO 4788). The procedures are not recommended for testing of volumetric instruments with capacities below 0,1 ml such as micro-glassware. This International Standard does not deal specifically with pyknometers as specified in ISO 3507. However, the procedures specified below for the determination of volume of glassware can, for the most part, also be followed for the calibration of pyknometers. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (inclu
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