SIST EN ISO 638-1:2022
(Main)Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content by oven-drying method - Part 1: Materials in solid form (ISO 638-1:2022)
Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content by oven-drying method - Part 1: Materials in solid form (ISO 638-1:2022)
This document specifies an oven-drying method for the determination of the dry matter content in
paper, board, pulp and cellulosic nanomaterials in solid form, which all can be produced from virgin
and /or recycled materials.
It is also applicable to the determination of the dry matter content of paper and board for recycling.
The procedure is applicable to paper, board, and pulp and cellulosic nanomaterials which do not
contain any appreciable quantities of materials other than water that are volatile at the temperature of
105 °C ± 2 °C. It is used, for example, in the case of pulp, paper, and board and cellulosic nanomaterial
samples taken for chemical and physical tests in the laboratory, when a concurrent determination of
dry matter content is required.
This method is not applicable to the determination of the dry matter content of slush pulp or to the
determination of the saleable mass of pulp lots.
NOTE 1 ISO 638-2[1]
specifies an oven-drying method for the determination of the dry matter content of
suspensions of cellulosic nanomaterials, ISO 287[2]
specifies the determination of the moisture content of a lot
of paper and board; ISO 4119[3]
specifies the determination of stock concentration of pulps; the ISO 801 series[4]
specifies the determination of the saleable mass in lots.
NOTE 2 This document determines the total dry matter content of the sample, including any dissolved solids.
If only the cellulosic material content free of dissolved solids is desired, dissolved solids are removed prior to
measuring the dry matter content, e.g. by washing or dialysis, taking care to retain all cellulosic material; in
cases where the sample is filterable without loss of cellulosic solids, ISO 4119[3]
can be used to determine the
stock consistency (content of cellulosic material in solid form).
Papier, Pappe, Faserstoff und cellulosehaltige Nanomaterialien - Bestimmung des Trockengehaltes durch das Wärmeschrankverfahren - Teil 1: Materialien in fester Form (ISO 638-1:2022)
Dieses Dokument legt ein Wärmeschrankverfahren für die Bestimmung des Trockengehaltes von Papier, Pappe, Faserstoff und cellulosehaltigen Nanomaterialien in fester Form fest, die jeweils aus Neumaterial und/oder recyceltem Material hergestellt werden können.
Es ist zudem anzuwenden für die Bestimmung des Trockengehaltes von Papier und Pappe für das Recycling.
Das Verfahren ist anzuwenden für Papier, Pappe und Faserstoff sowie cellulosehaltige Nanomaterialien, die außer Wasser keine nennenswerten Mengen von Materialien enthalten, die bei einer Temperatur von 105 °C ± 2 °C flüchtig sind. Es wird z. B. im Fall von Faserstoff-, Papier- und Pappe Durchschnittsproben sowie Durchschnittsproben von cellulosehaltigen Nanomaterialien verwendet, die für chemische und physikalische Prüfungen im Laboratorium entnommen werden, wenn eine gleichzeitige Bestimmung des Trockengehaltes erforderlich ist.
Dieses Verfahren ist nicht anzuwenden für die Bestimmung des Trockengehaltes von Faserstoff Suspensionen oder für die Bestimmung der verkaufsfähigen Masse von Faserstoff Lieferposten.
ANMERKUNG 1 ISO 638 2 [1] legt ein Wärmeschrankverfahren für die Bestimmung des Trockengehaltes von Suspensionen von cellulosehaltigen Nanomaterialien fest; ISO 287 [2] legt die Bestimmung des Feuchtegehaltes in einem Lieferposten Papier oder Pappe fest; ISO 4119 [3] legt die Bestimmung der Stoffdichte von Faserstoffen fest; ISO 801 (alle Teile) [4] legt die Bestimmung der verkaufsfähigen Masse in Lieferposten fest.
ANMERKUNG 2 Dieses Dokument dient der Bestimmung des Gesamttrockengehaltes der Durchschnittsprobe einschließlich jeglicher gelöster Feststoffe. Wird nur der Gehalt an cellulosehaltigem Material ohne die gelösten Feststoffe gewünscht, werden gelöste Feststoffe vor der Messung des Trockengehaltes z. B. durch Waschen oder Dialyse entfernt, wobei darauf geachtet wird, dass das gesamte cellulosehaltige Material erhalten bleibt; in Fällen, in denen die Durchschnittsprobe ohne Verlust von cellulosehaltigen Feststoffen gefiltert werden kann, kann ISO 4119 [3] angewendet werden, um die Stoffdichte (Gehalt an cellulosehaltigem Material in fester Form) zu bestimmen.
Papiers, cartons, pâtes et nanomatériaux cellulosiques - Détermination de la teneur en matières sèches par séchage à l'étuve - Partie 1: Matériaux sous forme solide (ISO 638-1:2022)
Le présent document spécifie une méthode de séchage à l’étuve pour la détermination de la teneur en matières sèches dans le papier, le carton, la pâte et les nanomatériaux cellulosiques sous forme solide, tous pouvant être produits à partir de matériaux vierges et/ou recyclés.
Elle est aussi applicable pour la détermination de la teneur en matières sèches du papier et du carton à recycler.
La méthode est applicable au papier, au carton, à la pâte et aux nanomatériaux cellulosiques ne contenant pas des quantités appréciables de matières autres que l’eau volatiles à la température de 105 °C ± 2 °C. Elle est utilisée, par exemple, dans le cas d’échantillons de pâte, de papier, de carton et de nanomatériaux cellulosiques prélevés en vue d’analyses chimiques et physiques effectuées en laboratoire lorsqu’il faut procéder à une détermination simultanée de la teneur en matières sèches.
Cette méthode n’est pas applicable pour la détermination de la teneur en matières sèches d’une suspension de pâte, ni pour la détermination de la masse marchande de lots de pâte.
NOTE 1 L’ISO 638-2[1] spécifie une méthode de séchage à l’étuve pour la détermination de la teneur en matières sèches dans des suspensions de nanomatériaux cellulosiques, l’ISO 287[2] spécifie la méthode de détermination de la teneur en humidité d’un lot de papier et carton, l’ISO 4119[3] spécifie la méthode de détermination de la concentration en pâte de suspensions aqueuses de pâtes, la série ISO 801[4] spécifie la méthode de détermination de la masse marchande de lots.
NOTE 2 Le présent document permet de déterminer la teneur totale en matières sèches d’un échantillon, y compris tout solide dissous. Pour obtenir la teneur en matériaux cellulosiques sans solides dissous, ces derniers sont éliminés avant de mesurer la teneur en matières sèches, par exemple par lavage ou dialyse, en prenant soin de conserver l’ensemble des matériaux cellulosiques. Lorsque l’échantillon peut être filtré sans perte de solides cellulosiques, l’ISO 4119[3] peut être utilisée pour déterminer la concentration en pâte (teneur en matériaux cellulosiques sous forme solide).
Papir, karton, lepenka in vlaknine ter celulozni nanomateriali - Določevanje suhe snovi z metodo sušenja v sušilniku - 1. del: Materiali v trdni obliki (ISO 638-1:2022)
Ta dokument določa metodo sušenja v sušilniku za določanje vsebnosti suhe snovi v papirju, kartonu, lepenki in celuloznih nanomaterialih v trdni obliki, ki jih je mogoče izdelati iz neobdelanih in/ali recikliranih materialov.
Uporablja se tudi za določanje vsebnosti suhe snovi v papirju in kartonu za recikliranje.
Postopek se uporablja za papir, karton, lepenko in celulozne nanomateriale, ki ne vsebujejo nobenih znatnih količin materialov (razen vode) in ki so hlapni pri temperaturi 105 °C ± 2 °C. Uporablja se na primer pri vzorcih lepenke, papirja in kartona ter celuloznih nanomaterialov, odvzetih za kemične in fizikalne preskuse v laboratoriju, kadar je potrebno sočasno določanje vsebnosti suhe snovi.
Ta metoda se ne uporablja za določanje vsebnosti suhe snovi v zmesi lepenke ali za določanje prodajne mase serij lepenke.
OPOMBA 1: ISO 638-2[1]
določa metodo sušenja v sušilniku za določevanje vsebnosti suhe snovi v suspenzijah celuloznih nanomaterialov, ISO 287[2] opisuje določevanje vsebnosti vlage
v papirju in kartonu; ISO 4119[3] opisuje določevanje koncentracije snovi lepenke; skupina standardov ISO 801[4] opisuje določevanje prodajne mase v serijah.
OPOMBA 2: Ta dokument določa celotno vsebnost suhe snovi v vzorcu, vključno z vsemi raztopljenimi trdnimi snovmi.
Če je zaželena samo vsebnost celuloznega materiala brez raztopljenih trdnih snovi, se raztopljene trdne snovi odstranijo pred merjenjem vsebnosti suhe snovi, npr. s pranjem ali dializo, pri čemer je treba paziti, da se zadrži ves celulozni material; v primerih, ko je vzorec filtriran brez izgube celuloznih trdnih snovi, se lahko uporabi standard ISO 4119[3] za določitev konsistence snovi (vsebnost celuloznega materiala v trdni obliki).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 638-1:2022
01-junij-2022
Nadomešča:
SIST EN ISO 638-1:2021
Papir, karton, lepenka in vlaknine ter celulozni nanomateriali - Določevanje suhe
snovi z metodo sušenja v sušilniku - 1. del: Materiali v trdni obliki (ISO 638-1:2022)
Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content
by oven-drying method - Part 1: Materials in solid form (ISO 638-1:2022)
Papier, Pappe, Faserstoff und cellulosehaltige Nanomaterialien - Bestimmung des
Trockengehaltes durch das Wärmeschrankverfahren - Teil 1: Materialien in fester Form
(ISO 638-1:2022)
Papiers, cartons, pâtes et nanomatériaux cellulosiques - Détermination de la teneur en
matières sèches par séchage à l'étuve - Partie 1: Matériaux sous forme solide (ISO 638-
1:2022)
Ta slovenski standard je istoveten z: EN ISO 638-1:2022
ICS:
85.040 Vlaknine Pulps
85.060 Papir, karton in lepenka Paper and board
SIST EN ISO 638-1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 638-1:2022
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SIST EN ISO 638-1:2022
EN ISO 638-1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 85.040; 85.060 Supersedes EN ISO 638-1:2021
English Version
Paper, board, pulps and cellulosic nanomaterials -
Determination of dry matter content by oven-drying
method - Part 1: Materials in solid form (ISO 638-1:2022)
Papiers, cartons, pâtes et nanomatériaux cellulosiques Papier, Pappe, Faserstoff und cellulosehaltige
- Détermination de la teneur en matières sèches par Nanomaterialien - Bestimmung des Trockengehaltes
séchage à l'étuve - Partie 1: Matériaux sous forme durch das Wärmeschrankverfahren - Teil 1:
solide (ISO 638-1:2022) Materialien in fester Form (ISO 638-1:2022)
This European Standard was approved by CEN on 14 March 2022.
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, Turkey 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 638-1:2022 E
worldwide for CEN national Members.
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SIST EN ISO 638-1:2022
EN ISO 638-1:2022 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 638-1:2022
EN ISO 638-1:2022 (E)
European foreword
This document (EN ISO 638-1:2022) has been prepared by Technical Committee ISO/TC 6 "Paper,
board and pulps" in collaboration with Technical Committee CEN/TC 172 “Pulp, paper and board” 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 October 2022, and conflicting national standards shall
be withdrawn at the latest by October 2022.
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.
This document supersedes EN ISO 638-1:2021.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 638-1:2022 has been approved by CEN as EN ISO 638-1:2022 without any modification.
3
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SIST EN ISO 638-1:2022
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SIST EN ISO 638-1:2022
INTERNATIONAL ISO
STANDARD 638-1
Second edition
2022-03
Paper, board, pulps and cellulosic
nanomaterials — Determination of
dry matter content by oven-drying
method —
Part 1:
Materials in solid form
Papiers, cartons, pâtes et nanomatériaux cellulosiques —
Détermination de la teneur en matières sèches par séchage à
l'étuve —
Partie 1: Matériaux sous forme solide
Reference number
ISO 638-1:2022(E)
© ISO 2022
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SIST EN ISO 638-1:2022
ISO 638-1:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2022 – All rights reserved
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SIST EN ISO 638-1:2022
ISO 638-1:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 3
6 Sampling . 3
7 Preparation of test pieces .3
7.1 General . 3
7.2 Paper and board for recycling . 3
7.3 Paper, board, pulp and cellulosic nanomaterial in solid form . 3
8 Procedure .4
9 Calculation and expression of results . 5
10 Precision . 5
11 Test report . 5
Annex A (informative) Calculation of the moisture content . 6
Annex B (informative) Precision . 7
Bibliography .10
iii
© ISO 2022 – All rights reserved
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SIST EN ISO 638-1:2022
ISO 638-1:2022(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 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 Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 172, Pulp, paper
and board, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This second edition cancels and replaces the first edition (ISO 638-1:2021), of which it constitutes a
minor revision. The changes are as follows:
— correction of the cross-references in Clause 8;
— editorial update.
A list of all parts in the ISO 638 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.
iv
© ISO 2022 – All rights reserved
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SIST EN ISO 638-1:2022
ISO 638-1:2022(E)
Introduction
Determination of dry matter content and moisture content are carried out for different purposes.
This document is used when the dry matter content is needed to calculate the results for chemical
analysis or physical testing, or to determine the moisture content of paper, board, and pulp and
cellulosic nanomaterials in solid form. An example of this is where the results of a chemical analysis for
cadmium or manganese are required on the basis of the oven-dry mass of the sample.
[1]
ISO 638-2 is dedicated to the determination of the dry matter content or water content of cellulosic
nanomaterials in the form of suspensions.
[2]
ISO 287 should be used for the purpose of determining the average moisture content and the variation
in moisture content (maximum and minimum values) of a lot of paper and board. In the converting of
paper and board, moisture content is important as it can have an effect on processes such as printing
and copying. Moisture content can have an effect on curl and dimensional stability.
[3]
ISO 4119 should be used in laboratory procedures or is referred to in other International Standards
in which the concentration of an aqueous pulp suspension requires determination.
v
© ISO 2022 – All rights reserved
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SIST EN ISO 638-1:2022
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SIST EN ISO 638-1:2022
INTERNATIONAL STANDARD ISO 638-1:2022(E)
Paper, board, pulps and cellulosic nanomaterials —
Determination of dry matter content by oven-drying
method —
Part 1:
Materials in solid form
1 Scope
This document specifies an oven-drying method for the determination of the dry matter content in
paper, board, pulp and cellulosic nanomaterials in solid form, which all can be produced from virgin
and /or recycled materials.
It is also applicable to the determination of the dry matter content of paper and board for recycling.
The procedure is applicable to paper, board, and pulp and cellulosic nanomaterials which do not
contain any appreciable quantities of materials other than water that are volatile at the temperature of
105 °C ± 2 °C. It is used, for example, in the case of pulp, paper, and board and cellulosic nanomaterial
samples taken for chemical and physical tests in the laboratory, when a concurrent determination of
dry matter content is required.
This method is not applicable to the determination of the dry matter content of slush pulp or to the
determination of the saleable mass of pulp lots.
[1]
NOTE 1 ISO 638-2 specifies an oven-drying method for the determination of the dry matter content of
[2]
suspensions of cellulosic nanomaterials, ISO 287 specifies the determination of the moisture content of a lot
[3] [4]
of paper and board; ISO 4119 specifies the determination of stock concentration of pulps; the ISO 801 series
specifies the determination of the saleable mass in lots.
NOTE 2 This document determines the total dry matter content of the sample, including any dissolved solids.
If only the cellulosic material content free of dissolved solids is desired, dissolved solids are removed prior to
measuring the dry matter content, e.g. by washing or dialysis, taking care to retain all cellulosic material; in
[3]
cases where the sample is filterable without loss of cellulosic solids, ISO 4119 can be used to determine the
stock consistency (content of cellulosic material in solid form).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
ISO 186, Paper and board — Sampling to determine average quality
ISO 7213, Pulps — Sampling for testing
EN 17085, Paper and board – Sampling procedures for paper and board for recycling
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
1
© ISO 2022 – All r
...
SLOVENSKI STANDARD
oSIST prEN ISO 638-1:2022
01-januar-2022
Papir, karton, lepenka in vlaknine ter celulozni nanomateriali - Določevanje suhe
snovi z metodo sušenja v sušilniku - 1. del: Materiali v trdni obliki (ISO/FDIS 638-
1:2021)
Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content
by oven-drying method - Part 1: Materials in solid form (ISO/FDIS 638-1:2021)
Papier, Pappe, Faserstoff und cellulosehaltige Nanomaterialien - Bestimmung des
Trockengehaltes durch das Wärmeschrankverfahren - Teil 1: Materialien in fester Form
(ISO/FDIS 638-1:2021)
Papiers, cartons, pâtes et nanomatériaux cellulosiques - Détermination de la teneur en
matières sèches par séchage à l'étuve - Partie 1: Matériaux sous forme solide (ISO/FDIS
638-1:2021)
Ta slovenski standard je istoveten z: prEN ISO 638-1 rev
ICS:
85.040 Vlaknine Pulps
85.060 Papir, karton in lepenka Paper and board
oSIST prEN ISO 638-1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 638-1:2022
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oSIST prEN ISO 638-1:2022
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 638-1
ISO/TC 6
Paper, board, pulps and cellulosic
Secretariat: SCC
nanomaterials — Determination of
Voting begins on:
2021-11-12 dry matter content by oven-drying
method —
Voting terminates on:
2022-02-04
Part 1:
Materials in solid form
Papiers, cartons, pâtes et nanomatériaux cellulosiques —
Détermination de la teneur en matières sèches par séchage à
l'étuve —
Partie 1: Matériaux sous forme solide
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 638-1:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2021
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oSIST prEN ISO 638-1:2022
ISO/FDIS 638-1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© 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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2021 – All rights reserved
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oSIST prEN ISO 638-1:2022
ISO/FDIS 638-1:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 3
6 Sampling . 3
7 Preparation of test pieces .3
7.1 General . 3
7.2 Paper and board for recycling . 3
7.3 Paper, board, pulp and cellulosic nanomaterial in solid form . 3
8 Procedure .4
9 Calculation and expression of results . 5
10 Precision . 5
11 Test report . 5
Annex A (informative) Calculation of the moisture content . 6
Annex B (informative) Precision . 7
Bibliography .10
iii
© ISO 2021 – All rights reserved
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oSIST prEN ISO 638-1:2022
ISO/FDIS 638-1:2021(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
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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).
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expressions related to conformity assessment, as well as information about ISO's adherence to
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 172, Pulp, paper
and board, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This second edition cancels and replaces the first edition (ISO 638-1:2021), of which it constitutes a
minor revision. The changes are as follows:
— correction of the cross-references in Clause 8;
— editorial update.
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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oSIST prEN ISO 638-1:2022
ISO/FDIS 638-1:2021(E)
Introduction
Determination of dry matter content and moisture content are carried out for different purposes.
This document is used when the dry matter content is needed to calculate the results for chemical
analysis or physical testing, or to determine the moisture content of paper, board, and pulp and
cellulosic nanomaterials in solid form. An example of this is where the results of a chemical analysis for
cadmium or manganese are required on the basis of the oven-dry mass of the sample.
[1]
ISO 638-2 is dedicated to the determination of the dry matter content or water content of cellulosic
nanomaterials in the form of suspensions.
[2]
ISO 287 should be used for the purpose of determining the average moisture content and the variation
in moisture content (maximum and minimum values) of a lot of paper and board. In the converting of
paper and board, moisture content is important as it can have an effect on processes such as printing
and copying. Moisture content can have an effect on curl and dimensional stability.
[3]
ISO 4119 should be used in laboratory procedures or is referred to in other International Standards
in which the concentration of an aqueous pulp suspension requires determination.
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oSIST prEN ISO 638-1:2022
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 638-1:2021(E)
Paper, board, pulps and cellulosic nanomaterials —
Determination of dry matter content by oven-drying
method —
Part 1:
Materials in solid form
1 Scope
This document specifies an oven-drying method for the determination of the dry matter content in
paper, board, pulp and cellulosic nanomaterials in solid form, which all can be produced from virgin
and /or recycled materials.
It is also applicable to the determination of the dry matter content of paper and board for recycling.
The procedure is applicable to paper, board, and pulp and cellulosic nanomaterials which do not
contain any appreciable quantities of materials other than water that are volatile at the temperature of
105 °C ± 2 °C. It is used, for example, in the case of pulp, paper, and board and cellulosic nanomaterial
samples taken for chemical and physical tests in the laboratory, when a concurrent determination of
dry matter content is required.
This method is not applicable to the determination of the dry matter content of slush pulp or to the
determination of the saleable mass of pulp lots.
[1]
NOTE 1 ISO 638-2 specifies an oven-drying method for the determination of the dry matter content of
[2]
suspensions of cellulosic nanomaterials, ISO 287 specifies the determination of the moisture content of a lot
[3] [4]
of paper and board; ISO 4119 specifies the determination of stock concentration of pulps; the ISO 801 series
specifies the determination of the saleable mass in lots.
NOTE 2 This document determines the total dry matter content of the sample, including any dissolved solids.
If only the cellulosic material content free of dissolved solids is desired, dissolved solids are removed prior to
measuring the dry matter content, e.g. by washing or dialysis, taking care to retain all cellulosic material; in
[3]
cases where the sample is filterable without loss of cellulosic solids, ISO 4119 can be used to determine the
stock consistency (content of cellulosic material in solid form)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
ISO 186, Paper and board — Sampling to determine average quality
ISO 7213, Pulps — Sampling for testing
EN 17085, Paper and board – Sampling procedures for paper and board for recycling
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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oSIST prEN ISO 638-1:2022
ISO/FDIS 638-1:2021(E)
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
cellulosic nanomaterial
CNM
material composed predominantly of cellulose, with any external dimension in the nanoscale (3.5)
Note 1 to entry: The terms nanocellulose (NC) and cellulose nanomaterial (CNM) are synonymous with cellulosic
nanomaterial (CNM).
Note 2 to entry: Some cellulosic nanomaterials can be composed of chemically modified cellulose.
[SOURCE: ISO/TS 20477:2017, 3.3.1, modified ─ “or a material having internal structure or surface
structure in the nanoscale, with the internal structure or surface structure composed predominantly
of cellulose” deleted from the definition, “cellulose” changed to “cellulosic”, Note 3 to entry deleted.]
3.2
constant mass
mass of the test piece determined at the equilibrium condition after drying until the difference between
two successive dryings and weighings, separated in time by at least half the initial drying period, does
not exceed 0,1 % mass fraction of the test piece before drying
3.3
dry matter content
w
dm
ratio of the mass of a test piece after drying to constant mass (3.2) at a temperature of 105 °C ± 2 °C
under specified conditions, to its mass before drying
Note 1 to entry: The dry matter content is usually expressed as a percentage mass fraction.
3.4
moisture content
w
HO
2
content of water in paper or board, i.e. the ratio of the loss of mass of a test piece, when dried at a
temperature of 105 °C ± 2 °C under specified conditions, to its mass at the time of sampling
Note 1 to entry: The moisture content is normally expressed as a percentage mass fr
...
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