SIST EN ISO 4803:2023

Laboratory glassware - Borosilicate glass tubing (ISO 4803:2021)

This document specifies requirements for borosilicate 3,3 glass tubing according to ISO 3585 for laboratory apparatus in an outer diameter range from 4 mm to 300 mm. This document defines dimensions, material, denomination, designation, requirements and inspection methods.

Laborgeräte aus Glas - Rohre aus Borosilicatglas (ISO 4803:2021)

Verrerie de laboratoire - Tubes en verre borosilicaté (ISO 4803:2021)

Le présent document spécifie les exigences relatives aux tubes en verre borosilicaté de classe 3.3 conformément à l’ISO 3585, destinés aux appareillages de laboratoire et de diamètre extérieur compris entre 4 mm et 300 mm. Le présent document définit les dimensions, le matériau, la dénomination, la désignation, les exigences et les méthodes d’inspection.

Laboratorijska steklovina - Borosilikatne steklene cevi (ISO 4803:2021)

»Ta dokument določa zahteve za cevi iz borosilikatnega stekla 3,3 v skladu s standardom ISO 3585 za laboratorijske aparate z območjem zunanjega premera od 4 mm do 300 mm. Ta dokument opredeljuje mere, material, poimenovanje, označevanje, zahteve in inšpekcijske metode.« (Področje uporabe standarda ISO 4803:2021)

General Information

• Status: Published
• Public Enquiry End Date: 06-Feb-2023
• Publication Date: 12-Apr-2023
• ICS: 71.040.20 - Laboratory ware and related apparatus
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Apr-2023
• Due Date: 11-Jun-2023
• Completion Date: 13-Apr-2023
• Ref Project: EN ISO 4803:2023 - Laboratory glassware - Borosilicate glass tubing (ISO 4803:2021)

Overview

EN ISO 4803:2023 - Laboratory glassware: Borosilicate glass tubing (ISO 4803:2021) is a CEN-adopted international standard specifying requirements for borosilicate 3.3 glass tubing used in laboratory apparatus. It covers tubing with outer diameters from 4 mm to 300 mm, defining designation, material properties, dimensional ranges, tolerances and inspection methods. The document is aligned with ISO 3585 (material) and refers to ISO 719 (hydrolytic resistance) and ISO 1101 (geometrical tolerancing).

Key topics and technical requirements

• Scope and designation
  • Tubing is designated by glass type, outer diameter, wall thickness category (light / medium / heavy) and manufacturer.
• Material
  • Tubing must conform to ISO 3585 borosilicate 3.3 requirements; free from harmful stresses and defects.
• Hydrolytic resistance
  • Alkali extraction (tested per ISO 719) shall not exceed 31 μg Na2O/g.
• Thermal properties
  • The glass has a very low coefficient of mean linear thermal expansion specified in the standard for the 20 °C to 300 °C range.
• Dimensions and tolerances
  • Outer diameter, wall thickness, length, straightness and ovality tolerances are defined in tabulated form (Tables 1–3).
  • Wall thickness difference (siding): max difference per cross-section is 12% of specified wall thickness (without exceeding wall thickness tolerance).
• Geometric inspection methods
  • Outer diameter measured as largest distance in a plane perpendicular to the axis.
  • Wall thickness measured as the shortest distance between inner and outer surfaces (specified measurement techniques given).
  • Straightness: different test setups for 4–5 mm tubes (flat surface/stop) and ≥6 mm tubes (supported span and sag measurement).
  • Ovality: tolerance up to 0.7% for diameters ≤48 mm and 1.0% for 50–300 mm (measured while rotating the tube).

Applications and users

• Practical for manufacturers of laboratory glassware, glass tubing suppliers, QA/QC engineers, laboratory equipment designers and procurement specialists.
• Common applications include chemical, pharmaceutical and food-industry laboratories and any technical use requiring high chemical resistance, thermal shock resistance and well-defined dimensional quality for glass tubing components.

Related standards

• ISO 3585 - Borosilicate glass 3.3 - Properties
• ISO 719 - Hydrolytic resistance test and classification
• ISO 1101 - Geometrical product specifications (ovality/circularity)

EN ISO 4803:2023 helps ensure consistent material performance and dimensional interchangeability for borosilicate laboratory tubing, supporting reliable manufacturing, testing and procurement of laboratory glassware.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2023
Laboratorijska steklovina - Borosilikatne steklene cevi (ISO 4803:2021)
Laboratory glassware - Borosilicate glass tubing (ISO 4803:2021)
Laborgeräte aus Glas - Rohre aus Borosilicatglas (ISO 4803:2021)
Verrerie de laboratoire - Tubes en verre borosilicaté (ISO 4803:2021)
Ta slovenski standard je istoveten z: EN ISO 4803:2023
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.

EN ISO 4803
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2023
EUROPÄISCHE NORM
ICS 71.040.20
English Version
Laboratory glassware - Borosilicate glass tubing (ISO
4803:2021)
Verrerie de laboratoire - Tubes en verre borosilicaté Laborgeräte aus Glas - Rohre aus Borosilicatglas (ISO
(ISO 4803:2021) 4803:2021)
This European Standard was approved by CEN on 10 March 2023.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4803:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 4803:2021 has been prepared by Technical Committee ISO/TC 48 "Laboratory
equipment” of the International Organization for Standardization (ISO) and has been taken over as
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 2023, and conflicting national standards
shall be withdrawn at the latest by September 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 4803:2021 has been approved by CEN as EN ISO 4803:2023 without any modification.

INTERNATIONAL ISO
STANDARD 4803
Second edition
2021-10
Laboratory glassware — Borosilicate
glass tubing
Verrerie de laboratoire — Tubes en verre borosilicaté
Reference number
ISO 4803:2021(E)
ISO 4803:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 4803:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Designation . 1
5 Material. 1
5.1 General . 1
5.2 Hydrolytic resistance . 1
5.3 Thermal coefficient of expansion . 1
6 Range of sizes and tolerances . 2
6.1 Diameter and wall thickness . 2
6.1.1 Determination of outer diameter . 2
6.1.2 Determination of wall thickness . 2
6.2 Wall thickness difference (Siding) . 2
6.3 Length . 2
6.4 Straightness . 2
6.5 Ovality . 4
Bibliography . 8
iii
ISO 4803:2021(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.
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
different 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 shall 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 information given for the convenience of users and does not
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