EN ISO 16496:2016

SLOVENSKI STANDARD
01-april-2016
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Laboratory glassware - Vacuum-jacketed vessels for heat insulation (ISO 16496:2016)
Laborgeräte aus Glas - Geräte mit Vakuummantelisolierung (ISO 16496:2016)
Verrerie de laboratoire - Appareillage à double enveloppe isolant sous vide (ISO
16496:2016)
Ta slovenski standard je istoveten z: EN ISO 16496:2016
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 16496
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2016
EUROPÄISCHE NORM
ICS 71.040.20
English Version
Laboratory glassware - Vacuum-jacketed vessels for heat
insulation (ISO 16496:2016)
Verrerie de laboratoire - Récipients à double Laborgeräte aus Glas - Geräte mit
enveloppe à vide pour isolation thermique (ISO Vakuummantelisolierung (ISO 16496:2016)
16496:2016)
This European Standard was approved by CEN on 19 December 2015.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16496:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 16496:2016) has been prepared by Technical Committee ISO/TC 48
"Laboratory equipment" 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 August 2016, and conflicting national standards shall
be withdrawn at the latest by August 2016.
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.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16496:2016 has been approved by CEN as EN ISO 16496:2016 without any modification.
INTERNATIONAL ISO
STANDARD 16496
First edition
2016-02-01
Laboratory glassware — Vacuum-
jacketed vessels for heat insulation
Verrerie de laboratoire — Récipients à double enveloppe à vide pour
isolation thermique
Reference number
ISO 16496:2016(E)
©
ISO 2016
ISO 16496:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
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copyright@iso.org
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ii © ISO 2016 – All rights reserved

ISO 16496:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions . 2
4.1 Dewar flasks . 2
4.2 Reaction vessels . 6
4.3 Columns . 6
5 Materials . 8
6 Construction . 9
7 Safety requirements and testing . 9
7.1 General . 9
7.2 Dewar flasks . 9
7.3 Reaction vessels .10
7.4 Columns .10
8 Use of vacuum vessels .10
8.1 Safety instructions .10
8.2 Functional requirements .10
9 User information .11
10 Marking .11
10.1 Dewar flasks .11
10.2 Reaction vessels and columns .11
Annex A (normative) Testing glass for residual strain (bifilar method) .13
Bibliography .14
ISO 16496:2016(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
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 48, Laboratory equipment.
iv © ISO 2016 – All rights reserved

INTERNATIONAL STANDARD ISO 16496:2016(E)
Laboratory glassware — Vacuum-jacketed vessels for
heat insulation
1 Scope
This International Standard recommends dimensions and specifies requirements and test methods for
laboratory glassware manufactured from borosilicate glass 3.3 and provided with a vacuum jacket for
thermal insulation. It covers Dewar vessels, vacuum-jacketed reaction vessels and vacuum-jacketed
columns intended for laboratory use and laboratory related applications. Typical dimensions are given
in Tables 1 to 5.
This International Standard does not apply to large scale production equipment and equipment
operated with pressures of more than 0,1 bar above atmospheric pressure.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 383, Laboratory glassware — Interchangeable conical ground joints
ISO 641, Laboratory glassware — Interchangeable spherical ground joints
ISO 718, Laboratory glassware — Thermal shock and thermal shock endurance — Test methods
ISO 3585, Borosilicate glass 3.3 — Properties
ISO 4803, Laboratory glassware — Borosilicate glass tubing
ISO 4790, Glass-to-glass sealings — Determination of stresses
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
Dewar flask
glass vessel with vacuum jacket for thermal insulation, designed for keeping substances at a controlled
temperature within a range from -200 °C to +200 °C
Note 1 to entry: See 8.1 for restrictions on the use of Dewar flasks.
3.2
cryo vessel
vacuum jacketed vessel made of materials other than glass
3.3
column
cylindrical vessel for the thermal separation of substances in a laboratory or pilot plant
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