prEN ISO 638-2 rev

Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content by oven-drying method - Part 2: Suspensions of cellulosic nanomaterials (ISO/FDIS 638-2:2021)

Minor revision

Papier, Pappe, Faserstoff und cellulosehaltige Nanomaterialien - Bestimmung des Trockengehaltes durch das Wärmeschrankverfahren - Teil 2: Suspensionen von cellulosehaltigen Nanomaterialien (ISO/FDIS 638-2:2021)

Dieses Dokument legt ein Wärmeschrankverfahren für die Bestimmung des Trockengehaltes in Suspensionen von cellulosehaltigen Nanomaterialien fest. Das Verfahren ist anzuwenden für Suspensionen von cellulosehaltigen 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 Durchschnittsproben aus Suspensionen von cellulosehaltigen Nanomaterialien verwendet, die für chemische und physikalische Prüfungen im Laboratorium entnommen werden, wenn eine gleichzeitige Bestimmung des Trockengehaltes erforderlich ist.
ANMERKUNG 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 zu achten ist, dass das gesamte cellulosehaltige Material erhalten bleibt.

Papiers, cartons, pâtes et nanomatériaux cellulosiques - Détermination de la teneur en matières sèches par séchage à l'étuve - Partie 2: Suspensions de nanomatériaux cellulosiques (ISO/FDIS 638-2:2021)

Papir, karton, lepenka in vlaknine ter celulozni nanomateriali - Določevanje suhe snovi z metodo sušenja v sušilniku - 2. del: Suspenzije celuloznih nanomaterialov (ISO/FDIS 638-2:2021)

General Information

• Status: Not Published
• ICS: 85.040 - Pulps
• ICS: 85.060 - Paper and board
• Technical Committee: CEN/TC 172 - Pulp, paper and board
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Due Date: 18-Feb-2022
• Completion Date: 18-Feb-2022
• Ref Project: oSIST prEN ISO 638-2:2022 - Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content by oven-drying method - Part 2: Suspensions of cellulosic nanomaterials (ISO/FDIS 638-2:2021)

RELATIONS

• Revised: EN ISO 638-2:2021 - Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content by oven-drying method - Part 2: Suspensions of cellulosic nanomaterials (ISO 638-2:2021)
• Effective Date: 01-Sep-2021

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 638-2:2022
01-januar-2022

Papir, karton, lepenka in vlaknine ter celulozni nanomateriali - Določevanje suhe

snovi z metodo sušenja v sušilniku - 2. del: Suspenzije celuloznih nanomaterialov

(ISO/FDIS 638-2:2021)

Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content

by oven-drying method - Part 2: Suspensions of cellulosic nanomaterials (ISO/FDIS 638-

2:2021)
Papier, Pappe, Faserstoff und cellulosehaltige Nanomaterialien - Bestimmung des
Trockengehaltes durch das Wärmeschrankverfahren - Teil 2: Suspensionen von
cellulosehaltigen Nanomaterialien (ISO/FDIS 638-2:2021)

Papiers, cartons, pâtes et nanomatériaux cellulosiques - Détermination de la teneur en

matières sèches par séchage à l'étuve - Partie 2: Suspensions de nanomatériaux
cellulosiques (ISO/FDIS 638-2:2021)
Ta slovenski standard je istoveten z: prEN ISO 638-2 rev
ICS:
85.040 Vlaknine Pulps
85.060 Papir, karton in lepenka Paper and board
oSIST prEN ISO 638-2:2022 en,fr,de

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

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oSIST prEN ISO 638-2:2022
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oSIST prEN ISO 638-2:2022
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 638-2
ISO/TC 6
Paper, board, pulps and cellulosic
Secretariat: SCC
nanomaterials — Determination of
Voting begins on:
2021-10-25 dry matter content by oven-drying
method —
Voting terminates on:
2022-01-17
Part 2:
Suspensions of cellulosic
nanomaterials
Papiers, cartons, pâtes et nanomatériaux cellulosiques —
Détermination de la teneur en matières sèches par séchage à
l'étuve —
Partie 2: Suspensions de nanomatériaux cellulosiques
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 638-2:2021(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 638-2:2022
ISO/FDIS 638-2:2021(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
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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
© ISO 2021 – All rights reserved
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oSIST prEN ISO 638-2:2022
ISO/FDIS 638-2:2021(E)
Contents Page

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

Introduction .................................................................................................................................................................................................................................v

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

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

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

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

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

6 Sampling ....................................................................................................................................................................................................................... 3

7 Preparation of test specimens .............................................................................................................................................................. 3

8 Procedure ....................................................................................................................................................................................................................3

9 Calculation and expression of results ........................................................................................................................................... 5

10 Precision ....................................................................................................................................................................................................................... 5

11 Test report .................................................................................................................................................................................................................. 5

Annex A (informative) Calculation of the water content ................................................................................................................ 6

Annex B (informative) Precision ............................................................................................................................................................................. 7

Bibliography ................................................................................................................................................................................................................................ 9

iii
© ISO 2021 – All rights reserved
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oSIST prEN ISO 638-2:2022
ISO/FDIS 638-2:2021(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

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 638-2:2021), of which it constitutes a

minor revision. The changes are as follows:
— editorial update;
— addition of a note in Table B.2.
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.
© ISO 2021 – All rights reserved
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oSIST prEN ISO 638-2:2022
ISO/FDIS 638-2:2021(E)
Introduction

Determination of dry matter content and water 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 water content of cellulosic nanomaterial suspensions.

[1]

ISO 638-1 is dedicated to the determination of the dry matter content or moisture content in paper,

board, pulp and cellulosic nanomaterials in solid form, which all can be produced from virgin and/or

recycled materials.
[2]

ISO 287 is 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 is used in laboratory procedures or is referred to in other International Standards in which

the stock concentration of an aqueous pulp suspension requires determination.
[4]
ISO 801 (all parts) specifies the determination of saleable mass in lots.
© ISO 2021 – All rights reserved
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oSIST prEN ISO 638-2:2022
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oSIST prEN ISO 638-2:2022
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 638-2:2021(E)
Paper, board, pulps and cellulosic nanomaterials —
Determination of dry matter content by oven-drying
method —
Part 2:
Suspensions of cellulosic nanomaterials
1 Scope

This document specifies an oven-drying method for the determination of the dry matter content

in suspensions of cellulosic nanomaterials. The procedure is applicable to cellulosic nanomaterial

suspensions 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 cellulosic nanomaterial

suspensions samples taken for chemical and physical tests in the laboratory, when a concurrent

determination of dry matter content is required.

NOTE 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.

2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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), or a

material having internal structure or surface structure in the nanoscale, with the internal structure or

surface structure composed predominantly of cellulose

Note 1 to entry: The terms nanocellulose (NC) and cellulose nanomaterial (CNM) are alternative terms for

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.]

© ISO 2021 – All rights reserved
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oSIST prEN ISO 638-2:2022
ISO/FDIS 638-2:2021(E)
3.2
constant mass

mass reached by a container after drying until the difference between two successive

dryings and weighings does not exceed a specified mass fraction of the test specimen after drying

3.3
constant mass

mass reached by a test specimen (3.7) 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 a specified mass fraction of the test specimen after drying
3.4
dry matter content

ratio of the mass of a test specimen (3.7), after drying to constant mass (3.3) 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.

3.5
nanoscale
length range approximately from 1 nm to 100 nm

Note 1 to entry: Properties that are not extrapolations from larger sizes are predominately exhibited in this

length range.
[SOURCE: ISO/TS 80004-1:2015, 2.1]
3.6
suspension

heterogeneous mixture of materials comprising a liquid and a finely dispersed solid material

Note 1 to entry: As the concentration of cellulosic nanomaterial increases, the suspension becomes more viscous

from liquid to gel.

Note 2 to entry: In the case of cellulosic nanomaterials, a material of a mass fraction of 1 % to 5 % concentration is

generally in gel form depending on the type of cellulosic nanomateri
...