Paper, board and pulps -- Determination of residue (ash) on ignition at 525 degrees C

This International Standard describes the determination of the residue (ash) on ignition of paper, board
and pulp at 525 °C. It is applicable to all types of paper, board, and pulp samples. The ash may consist of
a) mineral matter in the pulp and various residues from chemicals used in its manufacture,
b) metallic matter from piping and machinery, and
c) fillers, pigments, coatings, or residues from various additives.
In samples containing calcium carbonate, there is practically no decomposition of carbonate by ashing
at 525 °C. Other fillers and pigments such as clay and titanium dioxide are also unaffected by ashing
at 525 °C. Accordingly, the residue on ignition as determined by this International Standard provides
a good estimate of the total inorganic matter in the sample, provided that the sample does not contain
other minerals which decompose at or below this temperature. For example, magnesium carbonate and
calcium sulfate may, at least partly, decompose at temperatures below 525 °C.

Papier, carton et pâtes -- Détermination du résidu (cendres) après incinération à 525 degrés C

ISO 1762:2015 d�crit la d�termination du r�sidu (cendres) pr�sent dans un �chantillon de papier, de carton ou de p�te apr�s incin�ration � 525 �C. Elle s'applique � tous les types de papier, de carton et de p�te. Les cendres peuvent contenir:
a) des mati�res min�rales pr�sentes dans la p�te et divers r�sidus des produits chimiques entrant dans sa fabrication,
b) du m�tal provenant des canalisations ou de la machinerie,
c) des charges, pigments, couches ou r�sidus de divers adjuvants.
L'incin�ration � 525 �C d'�chantillons contenant du carbonate de calcium n'entra�ne pratiquement pas de d�composition du carbonate et n'a aucun effet sur des charges ou des pigments comme le kaolin ou le dioxyde de titane. En cons�quence, le r�sidu de l'incin�ration obtenu au moyen de la pr�sente Norme internationale donne une bonne estimation de la quantit� totale de mati�res inorganiques pr�sentes dans l'�chantillon, � condition que l'�chantillon ne contienne pas d'autres min�raux qui se d�composent � cette temp�rature ou � une temp�rature inf�rieure. Par exemple, le carbonate de magn�sium et le sulfate de calcium peuvent se d�composer, du moins en partie, � des temp�ratures inf�rieures � 525 �C.

Papir, karton, lepenka in vlaknine - Določevanje ostanka (pepela) pri žarenju pri 525 °C

Ta mednarodni standard opisuje določevanje ostanka (pepela) pri sežigu papirja, kartona, lepenke in vlaknin pri 525 °C. Uporablja se za vse vrste vzorcev papirja, kartona, lepenke in vlaknin. Pepel je lahko sestavljen iz
a) mineralnih snovi iz vlaknin in različnih ostankov kemikalij, uporabljenih pri njihovi proizvodnji,
b) kovinskih snovi iz cevi in strojev ter
c) polnil, pigmentov, premazov ali ostankov različnih dodatkov.
Pri vzorcih, ki so vsebovali kalcijev karbonat, po upepelitvi pri 525 °C praktično ni bilo razkrajanja karbonata. Upepelitev pri 525 °C prav tako ne vpliva na druga polnila in pigmente, kot sta glina in titanov dioksid. Torej ostanki po sežigu, kot ga določa ta mednarodni standard, zagotavljajo dobro oceno skupne količine neorganske snovi v vzorcu pod pogojem, da vzorec ne vsebuje drugih mineralov, ki se razkrojijo pri tej ali nižji temperaturi. Magnezijev karbonat in kalcijev sulfat se lahko na primer vsaj deloma razkrojita pri temperaturi, nižji od 525 °C.

General Information

Status
Published
Public Enquiry End Date
19-May-2016
Publication Date
19-May-2016
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Apr-2016
Due Date
09-Jun-2016
Completion Date
20-May-2016

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INTERNATIONAL ISO
STANDARD 1762
Redline version
compares Third edition to
Second edition
Paper, board and pulps —
Determination of residue (ash) on
ignition at 525 °C
Papier, carton et pâtes — Détermination du résidu (cendres) après
incinération à 525 °C
Reference number
ISO 1762:redline:2015(E)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 1762:redline:2015(E)
IMPORTANT — PLEASE NOTE
This is a mark-up copy and uses the following colour coding:
Text example 1 — indicates added text (in green)
— indicates removed text (in red)
Text example 2
— indicates added graphic figure
— indicates removed graphic figure
1.x ... — Heading numbers containg modifications are highlighted in yellow in
the Table of Contents

All changes in this document have yet to reach concensus by vote and as such should only

be used internally for review purposes.
DISCLAIMER

This Redline version provides you with a quick and easy way to compare the main changes

between this edition of the standard and its previous edition. It doesn’t capture all single

changes such as punctuation but highlights the modifications providing customers with

the most valuable information. Therefore it is important to note that this Redline version is

not the official ISO standard and that the users must consult with the clean version of the

standard, which is the official standard, for implementation purposes.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, 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

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 1762:redline:2015(E)
Contents Page

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

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

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

3 Term and definition Terms and definitions .............................................................................................................................. 1

4 Principle ........................................................................................................................................................................................................................ 2

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

6 Sampling and preparation of sample test specimen ........................................................................................................ 2

7 Procedure..................................................................................................................................................................................................................... 2

8 Calculation .................................................................................................................................................................................................................. 3

9 Precision ....................................................................................................................................................................................................................... 3

9.1 Repeatability ............................................................................................................................................................................................. 3

9.2 Reproducibility ....................................................................................................................................................................................... 4

10 9 Test report ................................................................................................................................................................................................................... 4

Annex A (informative) Precision ............................................................................................................................................................................... 5

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2015 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 1762:redline:2015(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 areThe 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 rules given ineditorial rules of the ISO/IEC Directives, Part 32 (see www.iso.

org/directives).

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 International Standarddocument

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

International Standard ISO 1762 was prepared by Technical CommitteeThe committee responsible for

this document is ISO/TC 6, Paper, board and pulps.

This secondthird edition cancels and replaces the firstsecond edition (ISO 1762:19742001). In this

revision of the 1974 edition, the ignition temperature has been changed from 575 °C to 525 °C to

minimize the decomposition of calcium carbonate, which has been technically revised.

iv © ISO 2015 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 1762:redline:2015(E)
Paper, board and pulps — Determination of residue (ash)
on ignition at 525 °C
1 Scope

This International Standard describes the determination of the residue (ash) on ignition of paper, board

and pulp at 525 °C. It is applicable to all types of paper, board, and pulp samples. The ash may consist of

a) mineral matter in the pulp and various residues from chemicals used in its manufacture,

b) metallic matter from piping and machinery, and
c) fillers, pigments, coatings, or residues from various additives.

In samples containing calcium carbonate, there is practically no decomposition of carbonate by ashing

at 525 °C. Other fillers and pigments such as clay and titanium dioxide are also unaffected by ashing

at 525 °C. Accordingly, the residue on ignition as determined by this International Standard provides

a good estimate of the total inorganic matter in the sample, provided that the sample does not contain

other minerals which decompose at or below this temperature. For example, magnesium carbonate and

calcium sulfate may, at least partly, decompose at temperatures below 525 °C.
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute

provisions of this International Standarddocuments, in whole or in part, are normatively referenced in

this document and are indispensable for its application. For dated references, subsequent amendments

to, or revisions of, any of these publications do not apply. However, parties to agreements based on this

International Standard are encouraged to investigate the possibility of applying the most re

...

INTERNATIONAL ISO
STANDARD 1762
Third edition
2015-06-15
Paper, board and pulps —
Determination of residue (ash) on
ignition at 525 °C
Papier, carton et pâtes — Détermination du résidu (cendres) après
incinération à 525 °C
Reference number
ISO 1762:2015(E)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 1762:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, 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

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 1762:2015(E)
Contents Page

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

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

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

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

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

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

6 Sampling and preparation of test specimen ............................................................................................................................ 2

7 Procedure..................................................................................................................................................................................................................... 2

8 Calculation .................................................................................................................................................................................................................. 3

9 Test report ................................................................................................................................................................................................................... 3

Annex A (informative) Precision ............................................................................................................................................................................... 4

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2015 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 1762:2015(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 6, Paper, board and pulps.

This third edition cancels and replaces the second edition (ISO 1762:2001), which has been

technically revised.
iv © ISO 2015 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 1762:2015(E)
Paper, board and pulps — Determination of residue (ash)
on ignition at 525 °C
1 Scope

This International Standard describes the determination of the residue (ash) on ignition of paper, board

and pulp at 525 °C. It is applicable to all types of paper, board, and pulp samples. The ash may consist of

a) mineral matter in the pulp and various residues from chemicals used in its manufacture,

b) metallic matter from piping and machinery, and
c) fillers, pigments, coatings, or residues from various additives.

In samples containing calcium carbonate, there is practically no decomposition of carbonate by ashing

at 525 °C. Other fillers and pigments such as clay and titanium dioxide are also unaffected by ashing

at 525 °C. Accordingly, the residue on ignition as determined by this International Standard provides

a good estimate of the total inorganic matter in the sample, provided that the sample does not contain

other minerals which decompose at or below this temperature. For example, magnesium carbonate and

calcium sulfate may, at least partly, decompose at temperatures below 525 °C.
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 186, Paper and board — Sampling to determine average quality
ISO 287, Paper and board — Determination of moisture content
...

SLOVENSKI STANDARD
oSIST ISO 1762:2016
01-maj-2016

3DSLUNDUWRQOHSHQNDLQYODNQLQH'RORþHYDQMHRVWDQND SHSHOD SULåDUHQMXSUL

ƒ&

Paper, board and pulps -- Determination of residue (ash) on ignition at 525 degrees C

Papier, carton et pâtes -- Détermination du résidu (cendres) après incinération à 525

degrés C
Ta slovenski standard je istoveten z: ISO 1762:2015
ICS:
85.040 Vlaknine Pulps
85.060 Papir, karton in lepenka Paper and board
oSIST ISO 1762:2016 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST ISO 1762:2016
---------------------- Page: 2 ----------------------
oSIST ISO 1762:2016
INTERNATIONAL ISO
STANDARD 1762
Third edition
2015-06-15
Paper, board and pulps —
Determination of residue (ash) on
ignition at 525 °C
Papier, carton et pâtes — Détermination du résidu (cendres) après
incinération à 525 °C
Reference number
ISO 1762:2015(E)
ISO 2015
---------------------- Page: 3 ----------------------
oSIST ISO 1762:2016
ISO 1762:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, 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

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST ISO 1762:2016
ISO 1762:2015(E)
Contents Page

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

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

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

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

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

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

6 Sampling and preparation of test specimen ............................................................................................................................ 2

7 Procedure..................................................................................................................................................................................................................... 2

8 Calculation .................................................................................................................................................................................................................. 3

9 Test report ................................................................................................................................................................................................................... 3

Annex A (informative) Precision ............................................................................................................................................................................... 4

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2015 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST ISO 1762:2016
ISO 1762:2015(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 6, Paper, board and pulps.

This third edition cancels and replaces the second edition (ISO 1762:2001), which has been

technically revised.
iv © ISO 2015 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST ISO 1762:2016
INTERNATIONAL STANDARD ISO 1762:2015(E)
Paper, board and pulps — Determination of residue (ash)
on ignition at 525 °C
1 Scope

This International Standard describes the determination of the residue (ash) on ignition of paper, board

and pulp at 525 °C. It is applicable to all types of paper, board, and pulp samples. The ash may consist of

a) mineral matter in the pulp and various residues from chemicals used in its manufacture,

b) metallic matter from piping and machinery, and
c) fillers, pigments, coatings, or residues from various additives.

In samples containing calcium carbonate, there is practically no decomposition of carbonate by ashing

at 525 °C. Other fillers and pigments such as clay and titanium dioxide are also unaffected by ashing

at 525 °C. Accordingly, the residue on ignition as determined by this International Standard provides

a good estimate of the total inorganic matter in the sample, provided that the sample does not contain

other minerals which decompose at or below this temperature. For example, magnesium carbonate and

calcium sulfate may, at least partly, decompose at temperatures below 525 °C.
2 Normative references
...

SLOVENSKI STANDARD
SIST ISO 1762:2016
01-junij-2016
1DGRPHãþD
SIST ISO 1762:2002

3DSLUNDUWRQOHSHQNDLQYODNQLQH'RORþHYDQMHRVWDQND SHSHOD SULåDUHQMXSUL

ƒ&

Paper, board and pulps -- Determination of residue (ash) on ignition at 525 degrees C

Papier, carton et pâtes -- Détermination du résidu (cendres) après incinération à 525

degrés C
Ta slovenski standard je istoveten z: ISO 1762:2015
ICS:
85.040 Vlaknine Pulps
85.060 Papir, karton in lepenka Paper and board
SIST ISO 1762:2016 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 1762:2016
---------------------- Page: 2 ----------------------
SIST ISO 1762:2016
INTERNATIONAL ISO
STANDARD 1762
Third edition
2015-06-15
Paper, board and pulps —
Determination of residue (ash) on
ignition at 525 °C
Papier, carton et pâtes — Détermination du résidu (cendres) après
incinération à 525 °C
Reference number
ISO 1762:2015(E)
ISO 2015
---------------------- Page: 3 ----------------------
SIST ISO 1762:2016
ISO 1762:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, 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

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 1762:2016
ISO 1762:2015(E)
Contents Page

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

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

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

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

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

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

6 Sampling and preparation of test specimen ............................................................................................................................ 2

7 Procedure..................................................................................................................................................................................................................... 2

8 Calculation .................................................................................................................................................................................................................. 3

9 Test report ................................................................................................................................................................................................................... 3

Annex A (informative) Precision ............................................................................................................................................................................... 4

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2015 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 1762:2016
ISO 1762:2015(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 6, Paper, board and pulps.

This third edition cancels and replaces the second edition (ISO 1762:2001), which has been

technically revised.
iv © ISO 2015 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 1762:2016
INTERNATIONAL STANDARD ISO 1762:2015(E)
Paper, board and pulps — Determination of residue (ash)
on ignition at 525 °C
1 Scope

This International Standard describes the determination of the residue (ash) on ignition of paper, board

and pulp at 525 °C. It is applicable to all types of paper, board, and pulp samples. The ash may consist of

a) mineral matter in the pulp and various residues from chemicals used in its manufacture,

b) metallic matter from piping and machinery, and
c) fillers, pigments, coatings, or residues from various additives.

In samples containing calcium carbonate, there is practically no decomposition of carbonate by ashing

at 525 °C. Other fillers and pigments such as clay and titanium dioxide are also unaffected by ashing

at 525 °C. Accordingly, the residue on ignition as determined by this International Standard provides

a good estimate of the total inorganic matter in the sample, provided that the sample does not contain

other minerals which decompose at or below this temperature. For example, magnesium carbonate and

calcium sulfate may, at least partly, decompose at temperatures below 525 °C.
...

NORME ISO
INTERNATIONALE 1762
Troisième édition
2015-06-15
Papier, carton et pâtes —
Détermination du résidu (cendres)
après incinération à 525 °C
Paper, board and pulps — Determination of residue (ash) on ignition
at 525 °C
Numéro de référence
ISO 1762:2015(F)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 1762:2015(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2015, Publié en Suisse

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée

sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur

l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à

l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
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ISO 1762:2015(F)
Sommaire Page

Avant-propos ..............................................................................................................................................................................................................................iv

1 Domaine d’application ................................................................................................................................................................................... 1

2 Références normatives ................................................................................................................................................................................... 1

3 Termes et définitions ....................................................................................................................................................................................... 1

4 Principe de la méthode .................................................................................................................................................................................. 1

5 Appareillage .............................................................................................................................................................................................................. 2

6 Échantillonnage et préparation de l’éprouvette ................................................................................................................. 2

7 Mode opératoire.................................................................................................................................................................................................... 2

8 Expression des résultats............................................................................................................................................................................... 3

9 Rapport d’essai ....................................................................................................................................................................................................... 3

Annexe A (informative) Fidélité................................................................................................................................................................................. 4

Bibliographie .............................................................................................................................................................................................................................. 6

© ISO 2015 – Tous droits réservés iii
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ISO 1762:2015(F)
Avant-propos

L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes

nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est

en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude

a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,

gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.

L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui concerne

la normalisation électrotechnique.

Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont

décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents

critères d’approbation requis pour les différents types de documents ISO. Le présent document a été

rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www.

iso.org/directives).

L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de

droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable

de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant les

références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de l’élaboration

du document sont indiqués dans l’Introduction et/ou sur la liste ISO des déclarations de brevets reçues

(voir www.iso.org/patents).

Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour

information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.

Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à l’évaluation

de la conformité, ou pour toute information au sujet de l’adhésion de l’ISO aux principes de l’OMC

concernant les obstacles techniques au commerce (OTC), voir le lien suivant: Avant-propos – Informations

supplémentaires.

Le comité chargé de l’élaboration du présent document est l’ISO/TC 6, Papiers, cartons et pâtes.

Cette troisième édition annule et remplace la deuxième édition (ISO 1762:2001), qui a fait l’objet d’une

révision technique.
iv © ISO 2015 – Tous droits réservés
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NORME INTERNATIONALE ISO 1762:2015(F)
Papier, carton et pâtes — Détermination du résidu
(cendres) après incinération à 525 °C
1 Domaine d’application

La présente Norme internationale décrit la détermination du résidu (cendres) présent dans un échantillon

de papier, de carton ou de pâte après incinération à 525 °C. Elle s’applique à tous les types de papier, de

carton et de pâte. Les cendres peuvent contenir:

a) des matières minérales présentes dans la pâte et divers résidus des produits chimiques entrant

dans sa fabrication,
b) du métal provenant des canalisations ou de la machinerie,
c) des charges, pigments, couches ou résidus de divers adjuvants.

L’incinération à 525 °C d’échantillons contenant du carbonate de calcium n’entraîne pratiquement pas

de décomposition du carbonate et n’a aucun effet sur des charges ou des pigments comme le kaolin ou

le dioxyde de titane. En conséquence, le résidu de l’incinération obtenu au moyen de la présente Norme

internationale donne une bonne estimation de la quantité totale de matières inorganiques présentes

dans l’échantillon, à condition que l’échantillon ne contienne pas d’autres minéraux qui se décomposent

à cette température ou à une température inférieure. Par exemple, le carbonate de magnésium et le

sulfate de calcium peuvent se décomposer, du moins en partie, à des températures inférieures à 525 °C.

2 Références normatives

Les documents ci-après, dans leur intégralité ou non, sont des références normatives indispensables à

l’application du présent document. Pour les références datées, seule l’édition citée s’applique. Pour les

références non datées, la dernière édition du document de référence s’applique (y compris les éventuels

amendements).
ISO 186, Papier et carton — Échantillonnage pour déterminer la qualité moyenne

ISO 287, Papier et carton — Détermination de la teneur en humidité d’un lot — Méthode par séchage à l’étuve

ISO 638, Papiers, cartons et pâtes — Détermination de la teneur en matières sèches — Méthode

...

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