EN ISO 4788:2005

Laboratory glassware - Graduated measuring cylinders (ISO 4788:2005)

ISO 4788:2005 specifies dimensions, material and constructional and metrological requirements of graduated measuring cylinders of tall form (Type 1a and Type 1b) and of squat form (Type 2). All types are suitable for general laboratory use.
The specifications in ISO 4788:2005 are in conformity with the principles of design and construction of volumetric glassware given in ISO 384.

Laborgeräte aus Glas - Messzylinder und Mischzylinder (ISO 4788:2005)

Diese Internationale Norm legt Anforderungen für Maße, Werkstoffe, Ausführung sowie messtechnische Anforderungen an Mess- und Mischzylinder der hohen Form (Bauform 1a und 1b) und der niedrigen Form (Bauform 2) fest. Alle Ausführungen sind für den allgemeinen Laborgebrauch geeignet.
Die Anforderungen dieser Internationalen Norm entsprechen den in ISO 384 festgelegten Grundlagen für Gestaltung und Bau von Volumenmessgeräten aus Glas.

Verrerie de laboratoire - Eprouvettes graduées cylindriques (ISO 4788:2005)

L'ISO 4788:2005 spécifie des dimensions, des exigences de matériaux, de construction et de métrologie pour les éprouvettes graduées cylindriques de forme haute (type 1a et 1b) et de forme basse (type 2). Tous les types conviennent à des utilisations courantes de laboratoire.
Les spécifications de l'ISO 4788:2005 sont en conformité avec les principes de conception et de construction de la verrerie volumétrique, donnés dans l'ISO 384.

Laboratorijska steklovina - Graduirani merilni valji (ISO 4788:2005)

General Information

• Status: Published
• Publication Date: 30-Apr-2005
• 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: 9093 - Decision to confirm - Review Enquiry
• Start Date: 01-Nov-2009
• Completion Date: 01-Nov-2009
• Ref Project: SIST EN ISO 4788:2005 - Laboratory glassware - Graduated measuring cylinders (ISO 4788:2005)

Overview

EN ISO 4788:2005 - Laboratory glassware: Graduated measuring cylinders (ISO 4788:2005) defines the dimensional, material, constructional and metrological requirements for graduated measuring cylinders used in general laboratory work. The standard covers three cylinder types (tall spouted Type 1a, tall stoppered Type 1b, and squat spouted Type 2), specifies nominal capacities from small (ml scale) up to 2 000 ml, and aligns with the volumetric glassware principles set out in ISO 384. The reference temperature for capacity is 20 °C (27 °C optional for some regions) and the unit of volume is the millilitre (ml).

Key topics and requirements

• Types and accuracy classes
  • Type 1a: tall form with spout (Class A and B)
  • Type 1b: tall form with ground neck and stopper (Class A and B)
  • Type 2: squat form with spout (Class B)
• Capacity series and dimensions
  • Nominal capacities typically range from 5 ml to 2 000 ml; dimensional series and subdivisions are specified in tables within the standard.
• Metrological requirements
  • Maximum permissible errors and scale subdivisions are defined per capacity and class (detailed in the standard tables).
  • Capacity is defined as the volume of water at the reference temperature contained to the highest graduation line; meniscus setting follows ISO 4787.
• Material and construction
  • Glass must meet hydrolytic resistance class HGB3 (ISO 719).
  • Cylinders must be robust, have uniform wall thickness, stable bases (integral or detachable), polished rims, and spouts designed to pour without running.
• Stopper and joints
  • Ground joints to standard sizes (ISO 383) and provision for well-fitting stoppers; unique identification marking when stoppers are individually ground.
• Graduation, marking and testing
  • Graduation patterns and figuring follow ISO 384; capacity testing per ISO 4787.
  • Required permanent markings: nominal capacity, unit (ml/cm3), reference temperature, “In” (adjusted to contain), class (A/B), maker, glass type, and joint size where applicable.

Applications and users

• Quality managers and procurement teams specifying laboratory glassware
• Manufacturers of laboratory graduated cylinders and accessory suppliers
• Calibration and testing laboratories performing metrological verification
• Research, clinical and industrial laboratories requiring traceable volumetric measurements
• Regulatory bodies and accreditation assessors for laboratory equipment

Related standards

• ISO 384 - Principles of design and construction of volumetric glassware
• ISO 4787 - Methods for use and testing of volumetric glassware capacity
• ISO 719 - Hydrolytic resistance of glass
• ISO 383 - Interchangeable ground joints
• ISO 4794 - Assessment of enamel marking chemical resistance

Keywords: EN ISO 4788:2005, graduated measuring cylinders, laboratory glassware, Class A and B, metrological requirements, ISO 4788, ISO 384, volumetric glassware.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2005
Laboratorijska steklovina - Graduirani merilni valji (ISO 4788:2005)
Laboratory glassware - Graduated measuring cylinders (ISO 4788:2005)
Laborgeräte aus Glas - Messzylinder und Mischzylinder (ISO 4788:2005)
Verrerie de laboratoire - Eprouvettes graduées cylindriques (ISO 4788:2005)
Ta slovenski standard je istoveten z: EN ISO 4788:2005
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 4788
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2005
ICS 17.060
English version
Laboratory glassware - Graduated measuring cylinders (ISO
4788:2005)
Verrerie de laboratoire - Eprouvettes graduées cylindriques Laborgeräte aus Glas - Messzylinder und Mischzylinder
(ISO 4788:2005) (ISO 4788:2005)
This European Standard was approved by CEN on 29 April 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4788:2005: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 4788:2005) has been prepared by Technical Committee ISO/TC 48
"Laboratory glassware and related apparatus" 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 November 2005, and conflicting national
standards shall be withdrawn at the latest by November 2005.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 4788:2005 has been approved by CEN as EN ISO 4788:2005 without any
modifications.
INTERNATIONAL ISO
STANDARD 4788
Second edition
2005-05-01
Laboratory glassware — Graduated
measuring cylinders
Verrerie de laboratoire — Éprouvettes graduées cylindriques

Reference number
ISO 4788:2005(E)
©
ISO 2005
ISO 4788:2005(E)
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ii © ISO 2005 – All rights reserved

ISO 4788:2005(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 4788 was prepared by Technical Committee ISO/TC 48, Laboratory glassware and related apparatus,
Subcommittee SC 6, Laboratory and volumetric ware.
This second edition cancels and replaces the first edition (ISO 4788:1980), which has been technically revised
to incorporate the following changes:
a) three types of graduated measuring cylinders have been specified;
b) two classes of accuracy have been introduced;
c) cylinders of squat form have been added;
d) marking of cylinders has been changed;
e) capacity at lowest graduation line for 5 ml and 10 ml cylinders has been increased.

ISO 4788:2005(E)
Introduction
The first edition of this International Standard (ISO 4788:1980) was originally written when the use of
measuring cylinders was largely limited to the approximate dispensing of reagents in wet chemical analytical
procedures; only one grade of accuracy was specified.
More recently, with the increasing demand for accreditation and changing uses to which measuring cylinders
are put, a significant demand has emerged worldwide for a more accurate class to complement the originally
specified range.
Also, with more work being carried out in laminar-flow cabinets, glove boxes and fume extraction hoods, in
which working heights are restricted, a need for short (squat) measuring cylinders has emerged.
This International Standard addresses these two needs, and has been prepared to meet the requirements of
ISO 384. This International Standard includes
a) spouted measuring cylinders of traditional (tall) form, accuracy classes A and B,
b) stoppered measuring cylinders of traditional (tall) form, accuracy classes A and B, and
c) spouted measuring cylinders of squat form, accuracy class B.
Class A has been considered for the third type (squat cylinders) but discounted because ISO 384
requirements would only be met by cylinders having manufacturing specifications which would be virtually
impossible to satisfy.
iv © ISO 2005 – All rights reserved

INTERNATIONAL STANDARD ISO 4788:2005(E)

Laboratory glassware — Graduated measuring cylinders
1 Scope
This International Standard specifies dimensions, material and constructional and metrological requirements
of graduated measuring cylinders of tall form (Type 1a and Type 1b) and of squat form (Ty
...