EN ISO 24450:2005
(Main)Laboratory glassware - Wide-necked boiling flasks (ISO 24450:2005)
Laboratory glassware - Wide-necked boiling flasks (ISO 24450:2005)
ISO 24450:2005 specifies requirements and dimensions for an internationally acceptable series of conical flasks and of flat-bottom and round-bottom flasks with wide neck for general laboratory purpose. The flasks are provided for direct use in laboratory, fitting together with other equipment for general laboratory purposes, and for further work up to other products.
For narrow-necked boiling flasks, ISO 1773 applies. For boiling flasks with conical ground joints, see ISO 4797.
Laborgeräte aus Glas - Erlenmeyer-, Rund- und Stehkolben, weithalsig (ISO 24450:2005)
Diese Internationale Norm legt Anforderungen und Maße für eine international akzeptierte Reihe von Erlenmeyerkolben sowie Rundkolben und Stehkolben mit weitem Hals für den allgemeinen Laborgebrauch fest. Die Kolben sind vorgesehen für:
- die direkte Benutzung im Labor, zusammenpassend mit anderen Geräten für den allgemeinen Laborgebrauch;
- die Weiterverarbeitung zu anderen Produkten.
ANMERKUNG Für Enghalskolben gilt ISO 1773. Hinsichtlich Kolben mit Kegelschliff siehe ISO 4797.
Verrerie de laboratoire - Fioles coniques et ballons à col large (ISO 24450:2005)
L'ISO 24450:2005 spécifie les exigences et les dimensions d'une série de fioles coniques, de ballons à fond rond et à fond plat, à col large, acceptable à l'échelle internationale et satisfaisant aux besoins généraux des laboratoires. Ces fioles sont destinées à un usage direct en laboratoire, en association avec d'autres matériels de laboratoire à usage général, et à la fabrication d'autres produits.
En ce qui concerne les fioles coniques et ballons à col étroit, l'ISO 1773 s'applique. Pour les fioles coniques et ballons à col muni d'un assemblage conique rodé, voir l'ISO 4797.
Laboratorijska steklovina - Vrelne bučke s širokim vratom (ISO 24450:2005)
General Information
- Status
- Published
- Publication Date
- 31-Oct-2005
- Technical Committee
- CEN/TC 332 - Laboratory equipment
- Drafting Committee
- CEN/TC 332 - Laboratory equipment
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 19-May-2010
- Completion Date
- 19-May-2010
Relations
- Effective Date
- 28-Jan-2026
Overview
EN ISO 24450:2005 specifies international standards for laboratory glassware, focusing on wide-necked boiling flasks, including conical, flat-bottom, and round-bottom types. Developed by ISO Technical Committee ISO/TC 48 and adopted by CEN, this standard ensures consistent dimensions, material quality, and construction requirements for these flasks, which are widely used across chemical, biological, and industrial laboratories.
The standard aims to guarantee compatibility of wide-necked boiling flasks with other laboratory equipment, promote safety, and support reproducible lab procedures globally. While EN ISO 24450:2005 covers wide-necked flasks, related ISO standards apply to narrow-necked and flasks with conical ground joints.
Key Topics
Scope and Series
- Covers wide-necked boiling flasks for general laboratory use.
- Defines specific nominal capacities for each flask type:
- Conical flasks: 50, 100, 250, 500, 1,000 ml
- Round-bottom flasks: up to 10,000 ml (50, 100, … 10,000 ml)
- Flat-bottom flasks: up to 2,000 ml
Material
- Flasks must be made from borosilicate glass 3.3 according to ISO 3585.
- Glassware shall be free of visible defects or internal stress that could impair performance.
Construction and Dimensions
- Stability requirements ensure conical and flat-bottomed flasks stand steadily without rocking.
- Necks should be circular and strengthened, with length proportional to neck diameter (1 to 1.25 times).
- Detailed dimensional tables specify wall thickness, body diameters, and overall height for each flask type and size.
- Wall thickness ranges ensure mechanical durability and safety.
Marking Requirements
- Each flask must be permanently labeled with:
- Nominal volume (e.g., “100 ml”)
- Maker’s or vendor’s identification
- A writable area for additional marking
- Reference to ISO 24450 is recommended for traceability.
- Each flask must be permanently labeled with:
Related Normative References
- ISO 3585: Borosilicate glass properties
- ISO 1773: Narrow-necked boiling flasks
- ISO 4797: Boiling flasks with conical ground joints
Applications
Wide-necked boiling flasks standardized by EN ISO 24450:2005 are essential in:
Chemical Laboratories
For mixing, heating, and boiling liquids in synthesis and analysis processes.Biotechnology and Pharmaceutical Labs
Providing reliable containment during culture incubation, sterilization, and processing.Industrial Quality Control
Enabling reproducible sample preparation and heating in R&D as well as production monitoring.Educational and Research Institutions
Offering consistent, safe laboratory glassware suitable for teaching and experimental research.
The standard ensures that flasks interface properly with laboratory accessories such as heating mantles, clamps, and condensers, streamlining lab workflow and safety.
Related Standards
ISO 1773 – Narrow-necked boiling flasks
Applies when flask necks are narrow, complementing the wide-necked flask requirements of ISO 24450.ISO 4797 – Boiling flasks with conical ground joints
Focuses on flasks designed to fit with ground glass joints used for secure connections with other glassware.ISO 3585 – Borosilicate glass 3.3 properties
Defines the material quality, chemical durability, and thermal resistance for laboratory glassware including boiling flasks.
By adhering to EN ISO 24450:2005, laboratories worldwide ensure their wide-necked boiling flasks meet stringent safety, quality, and dimensional standards, which enhances reliability in laboratory procedures and promotes international harmonization in lab glassware manufacturing.
Get Certified
Connect with accredited certification bodies for this standard
Eurofins Food Testing Global
Global leader in food, environment, and pharmaceutical product testing.
Intertek Bangladesh
Intertek certification and testing services in Bangladesh.
Intertek Textile Testing
Global textile testing and certification.
Sponsored listings
Frequently Asked Questions
EN ISO 24450:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "Laboratory glassware - Wide-necked boiling flasks (ISO 24450:2005)". This standard covers: ISO 24450:2005 specifies requirements and dimensions for an internationally acceptable series of conical flasks and of flat-bottom and round-bottom flasks with wide neck for general laboratory purpose. The flasks are provided for direct use in laboratory, fitting together with other equipment for general laboratory purposes, and for further work up to other products. For narrow-necked boiling flasks, ISO 1773 applies. For boiling flasks with conical ground joints, see ISO 4797.
ISO 24450:2005 specifies requirements and dimensions for an internationally acceptable series of conical flasks and of flat-bottom and round-bottom flasks with wide neck for general laboratory purpose. The flasks are provided for direct use in laboratory, fitting together with other equipment for general laboratory purposes, and for further work up to other products. For narrow-necked boiling flasks, ISO 1773 applies. For boiling flasks with conical ground joints, see ISO 4797.
EN ISO 24450:2005 is classified under the following ICS (International Classification for Standards) categories: 71.040.20 - Laboratory ware and related apparatus. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 24450:2005 has the following relationships with other standards: It is inter standard links to CEN ISO/TS 15877-7:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN ISO 24450:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2006
/DERUDWRULMVNDVWHNORYLQD9UHOQHEXþNHVãLURNLPYUDWRP ,62
Laboratory glassware - Wide-necked boiling flasks (ISO 24450:2005)
Laborgeräte aus Glas - Erlenmeyer-, Rund- und Stehkolben, weithalsig (ISO
24450:2005)
Verrerie de laboratoire - Fioles coniques et ballons a col large (ISO 24450:2005)
Ta slovenski standard je istoveten z: EN ISO 24450:2005
ICS:
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 24450
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2005
ICS 71.040.20
English Version
Laboratory glassware - Wide-necked boiling flasks (ISO
24450:2005)
Verrerie de laboratoire - Fioles coniques et ballons à col Laborgeräte aus Glas - Erlenmeyer-, Rund- und
large (ISO 24450:2005) Stehkolben, weithalsig (ISO 24450:2005)
This European Standard was approved by CEN on 28 October 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 24450:2005: E
worldwide for CEN national Members.
Foreword
This document (EN ISO 24450:2005) 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 May 2006, and conflicting national standards
shall be withdrawn at the latest by May 2006.
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 24450:2005 has been approved by CEN as EN ISO 24450:2005 without any
modifications.
INTERNATIONAL ISO
STANDARD 24450
First edition
2005-11-01
Laboratory glassware — Wide-necked
boiling flasks
Verrerie de laboratoire — Fioles coniques et ballons à col large
Reference number
ISO 24450:2005(E)
©
ISO 2005
ISO 24450:2005(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable 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 2005
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's 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-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2005 – All rights reserved
ISO 24450:2005(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Series and capacities . 1
4 Material . 2
5 Construction and dimensions . 2
6 Marking . 3
Bibliography . 4
SI
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...