EN ISO 4787:2011

Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010, Corrected version 2010-06-15)

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, korrigierte Fassung 2010-06-15)

Diese Internationale Norm legt Verfahren für die Prüfung, Kalibrierung und Anwendung von Volumenmessgeräten
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 Volumens;
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 vollständiger
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, Version corrigée 2010-06-15)

L'ISO 4787:2010 fournit des méthodes de vérification, d'étalonnage et d'utilisation des instruments volumétriques en verre, afin d'obtenir la meilleure exactitude possible lors de l'utilisation.
Les Normes internationales spécifiques à chaque instrument volumétrique (ISO 385, ISO 646, ISO 835, ISO 1042 et ISO 4788) comportent des articles définissant la capacité; ces articles décrivent la méthode de manipulation de façon assez détaillée pour définir sans ambiguïté la capacité. La présente Norme internationale contient des informations complémentaires.
Les modes opératoires de l'ISO 4787:2010 sont applicables à des instruments volumétriques dont les capacités nominales sont comprises entre 0,1 ml et 10 000 ml. Cela inclut les pipettes à un volume (voir l'ISO 648) non graduées, les pipettes graduées et les pipettes à dilution entièrement ou partiellement graduées (voir l'ISO 835), les burettes (voir l'ISO 385), les fioles jaugées (voir l'ISO 1042) et les éprouvettes graduées cylindriques (voir l'ISO 4788). Les modes opératoires ne sont pas conseillés pour la vérification d'instruments volumétriques dont les capacités sont inférieures à 0,1 ml, comme par exemple la micro-verrerie.
L'ISO 4787:2010 ne traite pas spécifiquement des pycnomètres spécifiés dans l'ISO 3507. Toutefois, les modes opératoires spécifiés pour la détermination du volume de la verrerie peuvent également en grande partie être suivis pour l'étalonnage des pycnomètres.

Laboratorijska steklovina - Instrumenti za volumetrična merjenja - Metode za preskušanje zmogljivosti in uporaba (ISO 4787:2010, popravljena verzija 2010-06-15)

Ta mednarodni standard zagotavlja metode za preskušanje, kalibracijo in uporabo instrumentov za volumetrična merjenja, izdelanih iz stekla, da bi se dosegla najboljša natančnost pri uporabi.
OPOMBA: Preskušanje je postopek, pri katerem se določa skladnost posameznega instrumenta za volumetrična merjenja z ustreznim standardom, konča pa se z določitvijo napake meritve na eni ali več točkah.
Mednarodni standardi za posamezne instrumente za volumetrična merjenja zajemajo klavzule o določitvi zmogljivosti; te klavzule opisujejo metodo ravnanja 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. Ti zajemajo: pipete z enojnim volumnom (glej ISO 648) brez podrazdelitve; graduirane merilne pipete in pipete za razredčevanje z delnimi ali popolnimi podrazdelki (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 mikrosteklovina.
Ta mednarodni standard ne obravnava posebej piknometrov, kot so opredeljeni v ISO 3507. Vendar pa se postopki za določitev volumna steklovine, opredeljeni v nadaljevanju, večinoma lahko uporabijo za kalibracijo piknometrov.

General Information

• Status: Withdrawn
• Publication Date: 01-Mar-2011
• Withdrawal Date: 30-Nov-2021
• ICS: 17.060 - Measurement of volume, mass, density, viscosity
• Technical Committee: CEN/TC 332 - Laboratory equipment
• Drafting Committee: CEN/TC 332 - Laboratory equipment
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 01-Dec-2021
• Ref Project: SIST EN ISO 4787:2011 - Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010, Corrected version 2010-06-15)

Relations

• Replaces: EN ISO 4787:2010 - Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010)
• Effective Date: 05-Mar-2011
• Replaced By: EN ISO 4787:2021 - Laboratory glass and plastic ware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2021)
• Effective Date: 02-Sep-2020

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2011
1DGRPHãþD
SIST EN ISO 4787:2010
/DERUDWRULMVNDVWHNORYLQD,QVWUXPHQWL]DYROXPHWULþQDPHUMHQMD0HWRGH]D
SUHVNXãDQMH]PRJOMLYRVWLLQXSRUDED,62SRSUDYOMHQDYHU]LMD

Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for
use (ISO 4787:2010, Corrected version 2010-06-15)
Laborgeräte aus Glas - Volumenmessgeräte - Prüfverfahren und Anwendung (ISO
4787:2010, korrigierte Fassung 2010-06-15)
Verrerie de laboratoire - Instruments volumétriques - Méthodes de vérification de la
capacité et d'utilisation (ISO 4787:2010, Version corrigée 2010-06-15)
Ta slovenski standard je istoveten z: EN ISO 4787:2011
ICS:
17.060 Merjenje prostornine, mase, Measurement of volume,
gostote, viskoznosti mass, density, viscosity
71.040.20 Laboratorijska posoda in Laboratory ware and related
aparati apparatus
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 4787
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2011
ICS 17.060 Supersedes EN ISO 4787:2010
English Version
Laboratory glassware - Volumetric instruments - Methods for
testing of capacity and for use (ISO 4787:2010, Corrected
version 2010-06-15)
Verrerie de laboratoire - Instruments volumétriques - Laborgeräte aus Glas - Volumenmessgeräte -
Méthodes de vérification de la capacité et d'utilisation (ISO Prüfverfahren und Anwendung (ISO 4787:2010, korrigierte
4787:2010, Version corrigée 2010-06-15) Fassung 2010-06-15)
This European Standard was approved by CEN on 31 January 2011.

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-CENELEC 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-CENELEC 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4787:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 4787:2010, Corrected version 2010-06-15 has been prepared by Technical Committee
ISO/TC 48 “Laboratory equipment” of the International Organization for Standardization (ISO) and has been
taken over as EN ISO 4787:2011 by 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 September 2011, and conflicting national standards shall be
withdrawn at the latest by September 2011.
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.
This document supersedes EN ISO 4787:2010.
According to 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 4787:2010, Corrected version 2010-06-15 has been approved by CEN as a EN ISO
4787:2011 without any modification.

INTERNATIONAL ISO
STANDARD 4787
Second edition
2010-04-15
Corrected version
2010-06-15
Laboratory 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

Reference number
ISO 4787:2010(E)
©
ISO 2010
ISO 4787:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 4787:2010(E)
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)
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.
This corrected version of ISO 4787:2010 incorporates the following corrections:
⎯ Figure 1 on page 5 has been corrected to show the correct setting of the meniscus as described in the
text;
⎯ Figure 2 on page 5 has been improved to better illustrate what the user of the instrument really sees
when setting the meniscus.
iv © ISO 2010 – All rights reserved

INTERNATIONAL STANDARD ISO 4787:2010(E)

Laboratory glassware — Vo
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