EN ISO 4263-1:2004

SLOVENSKI STANDARD
01-marec-2005
1DIWDLQVRURGQLSURL]YRGL'RORþDQMHVWDUDQMDLQKLELUDQLKROMLQWHNRþLQ3UHVNXV
7267GHO3RVWRSHN]DPLQHUDOQDROMD,62
Petroleum and related products - Determination of the ageing behaviour of inhibited oils
and fluids - TOST test - Part 1: Procedure for mineral oils (ISO 4263-1:2003)
Mineralölerzeugnisse und verwandte Produkte - Bestimmung des Alterungsverhaltens
von inhibierten Ölen und Flüssigkeiten - TOST- Verfahren - Teil 1: Verfahren für
Mineralöle (ISO 4263-1:2003)
Pétrole et produits connexes - Détermination du comportement au vieillissement des
fluides et huiles inhibées - Essai TOST - Partie 1: Méthode pour les huiles minérales
(ISO 4263-1:2003)
Ta slovenski standard je istoveten z: EN ISO 4263-1:2004
ICS:
75.100 Maziva Lubricants, industrial oils and
related products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 4263-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2004
ICS 75.100
English version
Petroleum and related products - Determination of the ageing
behaviour of inhibited oils and fluids - TOST test - Part 1:
Procedure for mineral oils (ISO 4263-1:2003)
Pétrole et produits connexes - Détermination du Mineralölerzeugnisse und verwandte Produkte -
comportement au vieillissement des fluides et huiles Bestimmung des Alterungsverhaltens von inhibierten Ölen
inhibées - Essai TOST - Partie 1: Méthode pour les huiles und Flüssigkeiten - TOST- Verfahren - Teil 1: Verfahren für
minérales (ISO 4263-1:2003) Mineralöle (ISO 4263-1:2003)
This European Standard was approved by CEN on 21 December 2004.
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
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4263-1:2004: E
worldwide for CEN national Members.

Foreword
The text of ISO 4263-1:2003 has been prepared by Technical Committee ISO/TC 28 "Petroleum
products and lubricants” of the International Organization for Standardization (ISO) and has
been taken over as EN ISO 4263-1:2004 by Technical Committee CEN/TC 19 "Petroleum
products, lubricants and related products", the secretariat of which is held by NEN.

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 June 2005, and conflicting national
standards shall be withdrawn at the latest by June 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 4263-1:2003 has been approved by CEN as EN ISO 4263-1:2004 without any
modifications.
INTERNATIONAL ISO
STANDARD 4263-1
First edition
2003-03-15
Petroleum and related products —
Determination of the ageing behaviour of
inhibited oils and fluids — TOST test —
Part 1:
Procedure for mineral oils
Pétrole et produits connexes — Détermination du comportement au
vieillissement des fluides et huiles inhibés — Essai TOST —
Partie 1: Méthode pour les huiles minérales

Reference number
ISO 4263-1:2003(E)
©
ISO 2003
ISO 4263-1:2003(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 2003
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 2003 — All rights reserved

ISO 4263-1:2003(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Principle . 2
4 Reagents and materials. 2
5 Apparatus . 3
6 Sampling . 6
7 Preparation of materials and apparatus . 6
8 Procedure . 8
9 Calculation. 9
10 Expression of results. 9
11 Precision . 9
12 Test report . 10
Annex A (normative) Liquid-in-glass thermometer specifications . 11
Annex B (normative) Procedure for packaging and storage of catalyst coils . 12
Annex C (informative) Method for the determination of the insolubles content of mineral oils . 13
Annex D (informative) Appearance rating of catalyst coil wires . 15
Annex E (informative) Determination of metals content . 16
Bibliography . 17

ISO 4263-1:2003(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 4263-1 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants.
ISO 4263 consists of the following parts, under the general title Petroleum and related products —
Determination of the ageing behaviour of inhibited oils and fluids — TOST test:
 Part 1: Procedure for mineral oils
 Part 2: Procedure for category HFC hydraulic fluids
 Part 3: Anhydrous procedure for synthetic hydraulic fluids
 Part 4: Procedure for industrial gear oils

iv © ISO 2003 — All rights reserved

INTERNATIONAL STANDARD ISO 4263-1:2003(E)

Petroleum and related products — Determination of the ageing
behaviour of inhibited oils and fluids — TOST test —
Part 1:
Procedure for mineral oils
WARNING — The use of this part of ISO 4263 may involve hazardous materials, operations and
equipment. This part of ISO 4263 does not purport to address all of the safety problems associated
with its use. It is the responsibility of the user of this part of ISO 4263 to establish appropriate safety
and health practices and determine the applicability of regulatory limitations prior to use.
1 Scope
This part of ISO 4263 specifies a method for the determination of the ageing behaviour of rust- and oxidation-
inhibited mineral oils having a density less than that of water, used as turbine oils (categories TSA, TGA, TSE,
TGE of ISO 6743-5, see [4] in the Bibliography), hydraulic oils (categories HL, HM, HR, HV, HG of
ISO 6743-4, see [3] in the Bibliography), and circulating oils (category CKB of ISO 6743-6, see [5] in the
Bibliography). Oils containing synthetic components can be tested by this procedure, but no precision
statement is available yet for such fluids.
NOTE 1 For the purposes of this part of ISO 4263, the term "% (m/m)" is used to represent the mass fraction of a
material.
NOTE 2 Other signs of oil deterioration, such as the formation of insoluble sludge, catalyst coil corrosion or decrease in
pH value, may occur, which indicate oxidation of the oil, but are not reflected in the calculated oxidation lifetime. The
correlation of these occurrences with field service is under investigation.
This test method is widely used in specifications and is considered of value in comparing the oxidation stability
of oils that are prone to contamination with water. However, because of the large number of individual field-
service applications, the correlation between the results of this test and actual service performance can vary
markedly, and is best judged on experience.
The precision of this part of ISO 4263 for oxidation life was only determined on inhibited turbine oils, and
applies to oxidation lives of 700 h to 3 900 h.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
1)
ISO 3170:— , Petroleum liquids — Manual sampling
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods

1) To be published. (Revision of ISO 3170:1988)
ISO 4263-1:2003(E)
ISO 6618:1997, Petroleum products and lubricants — Determination of acid or base number — Colour-
indicator titration method
ISO 6619:1988, Petroleum products and lubricants — Neutralization number — Potentiometric titration
method
ISO 7537:1997, Petroleum products — Determination of acid number — Semi-micro colour-indicator titration
method
3 Principle
A test portion is reacted, in the absence of light, at 95 °C with oxygen in the presence of water and a steel and
copper catalyst coil. Small aliquots of the oil are withdrawn at regular intervals and the acid number is
measured (see Note 2 in Clause 1). The
...