ISO 4625-3-2026 Binders for paints and varnishes-Determination of softening point

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Reference number

Binders for paints and varnishes —

Determination of softening point—

Part 3:

Cup method (without a ball)

Liants pour peintures et vernis— Détermination du point de

ramollissement —

Partie 3:Méthode de la coupe (sans bille)

ISO 4625-3:2026(en)

International

Standard

ISO 4625-3

First edition

2026-05

◎ISO 2026

iii

ISO4625-3:2026(en)

Contents Page

Foreword..................................................................................................................................................................... iv

Introduction............................................................................................................................................................... V

1 Scope ............................................................................................................................................................... 1

2 Normative references .................................................................................................................................. 1

3 Terms and definitions ..................................................................................................................................1

4 Principle.......................................................................................................................................................... 1

5 Apparatus..........................................................................................................................................................2

5.1 Softening point apparatus...................................................................................................... 2

5.2 Central processor.....................................................................................................................2

5.3 Measuring cell......................................................................................................................... 2

5.4 Sample cup assembl................................................................................................................. 2

6 Calibration of apparatus using a primary standard.............................................................................2

6.1 Genera..................................................................................................................................... 2

6.2 Reagent.................................................................................................................................. 3

6.3 Procedure..................................................................................................................................3

6.3.1 Filling the sample cup.................................................................................................... 3

6.3.2 Heating...........................................................................................................................3

6.3.3 Cleaning......................................................................................................................... 3

6.3.4 Interpretation................................................................................................................ 3

7 Instrument check of apparatus using a secondary standard ............................................................. 3

8 Preparation of sample....................................................................................................................................4

8.1 Preparation............................................................................................................................... 4

8.2 Filling the sample cup............................................................................................................... 4

9 Procedure ....................................................................................................................................................... 5

10 Expression of resuls..................................................................................................................................... 5

11 Precision and bias ....................................................................................................................................... 5

11.1 Genera......................................................................................................................................5

11.2 Precision................................................................................................................................... 5

11.3 Bias.......................................................................................................................................... 5

12 Test repor ...................................................................................................................................................... 6

Annex A(informative) Details of the interlaboratory comparison for the estimation of precision..........7

Bibliography

............................................................... ……………………………………………………… 9

ISO4625-3:2026(en)

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 partin the work.ISO collaborates closely

with the International Electrotechnical Commission(IEC)onall 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 document 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 ).

ISO draws attention to the possibility that the implementation of this document may involve the use of (a)

patent(s).ISO takes no position concerning the evidence,validity or applicability of any claimed patent

rights in respect thereof.As of the date of publication of this document,ISO had not received notice of (a)

patent(s)which may be required to implement this document.However,implementers are cautioned that

this may not represent the latest information,which may be obtained from the patent database available at

www.iso.org/patents .ISO shall not be held responsible for identifying any or all such patent rights.

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards,the meaning of ISO specific terms and expressions

related to conformity assessment, as well as information about ISO's adherence to the World Trade

Organization(WTO)principles in the Technical Barriersto Trade(TBT),see www.iso.org/iso/foreword.html .

This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes.

A list ofall parts in the ISO 4625 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user's national standards body.A

complete listing of these bodies can be found at www.iso.org/members.html .

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标签： #ISO #2026

摘要：

ReferencenumberBindersforpaintsandvarnishes—Determinationofsofteningpoint—Part3:Cupmethod(withoutaball)Liantspourpeinturesetvernis—Déterminationdupointderamollissement—Partie3:Méthodedelacoupe(sansbille)ISO4625-3:2026(en)InternationalStandardISO4625-3Firstedition2026-05◎ISO2026iiiISO4625-3:2026(en)C...

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