prEN ISO 638-1

Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content - Oven-drying method - Part 1: Materials in solid form (ISO/DIS 638-1:2020)

Papier, Pappe, Faserstoff und cellulosehaltige Nanomaterialien - Bestimmung des Trockengehaltes - Wärmeschrankverfahren - Teil 1: Materialien in fester Form (ISO/DIS 638-1:2020)

Papiers, cartons et pâtes - Détermination de la teneur en matières sèches - Méthode par séchage à l'étuve - Partie 1: Titre manque (ISO/DIS 638-1:2020)

Papir, karton, lepenka in vlaknine ter celulozni nanomateriali - Določevanje suhe snovi - Metoda sušenja v sušilniku - 2. del: Materiali v trdni obliki (ISO/DIS 638-2:2020)

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 638-1:2020
01-oktober-2020

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

snovi - Metoda sušenja v sušilniku - 2. del: Materiali v trdni obliki (ISO/DIS 638-

2:2020)

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

Oven-drying method - Part 1: Materials in solid form (ISO/DIS 638-1:2020)
Papier, Pappe, Faserstoff und cellulosehaltige Nanomaterialien - Bestimmung des

Trockengehaltes - Wärmeschrankverfahren - Teil 1: Materialien in fester Form (ISO/DIS

638-1:2020)

Papiers, cartons et pâtes - Détermination de la teneur en matières sèches - Méthode par

séchage à l'étuve - Partie 1: Titre manque (ISO/DIS 638-1:2020)
Ta slovenski standard je istoveten z: prEN ISO 638-1
ICS:
85.040 Vlaknine Pulps
85.060 Papir, karton in lepenka Paper and board
oSIST prEN ISO 638-1:2020 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 638-1:2020
---------------------- Page: 2 ----------------------
oSIST prEN ISO 638-1:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 638-1
ISO/TC 6 Secretariat: SCC
Voting begins on: Voting terminates on:
2020-07-24 2020-10-16
Paper, board, pulps and cellulosic nanomaterials —
Determination of dry matter content — Oven-drying
method —
Part 1:
Materials in solid form
ICS: 85.060; 85.040
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 638-1:2020(E)
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 SUPPORTING DOCUMENTATION. ISO 2020
---------------------- Page: 3 ----------------------
oSIST prEN ISO 638-1:2020
ISO/DIS 638-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 638-1:2020
ISO/DIS 638-1:2020(E)
Contents Page

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

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

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

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

3 Terms and definitions ..................................................................................................................................................................................... 2

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 Expression of results ........................................................................................................................................................................................ 5

9.1 Calculation .................................................................................................................................................................................................. 5

10 Test report ................................................................................................................................................................................................................... 5

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

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

Bibliography .............................................................................................................................................................................................................................11

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 638-1:2020
ISO/DIS 638-1:2020(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 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 the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 6, Paper, board and pulps.

This third edition cancels and replaces the second edition (ISO 638:2008), which has been technically

revised.
The main changes compared to the previous edition are as follows:

— Introduction of cellulosic nanomaterials and paper and board for recycling in the scope

— Split of the standard in two parts
— Technical revision of the procedure
— Editorial revision of the document
— Update of clause of precision
iv © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 638-1:2020
ISO/DIS 638-1:2020(E)
Introduction

Determination of dry matter content and moisture content are carried out for different purposes.

This part of International Standard ISO 638 (ISO 638-1) should be 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 and board for recycling. 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.

Part 2 of International Standard ISO 638 (ISO 638-2) [1] is dedicated to the determination of the dry

matter content or moisture content of cellulosic nanomaterials in the form of suspensions.

ISO 287 [2] 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. 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.

ISO 4119 [3] 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.
© ISO 2020 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 638-1:2020
---------------------- Page: 8 ----------------------
oSIST prEN ISO 638-1:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 638-1:2020(E)
Paper, board, pulps and cellulosic nanomaterials —
Determination of dry matter content — 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 and pulp and cellulosic nanomaterials in solid form, which all may 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 in

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; ISO 801 (all parts)

[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 should be 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).
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 287:2009, Paper and board — Determination of moisture content of a lot — Oven-drying method

ISO 7213, Pulps — Sampling for testing

EN 17085, Paper and board – Sampling procedures for paper and board for recycling

ISO/TS 20477:2017, Nanotechnologies — Standard terms and their definition for cellulose nanomaterial

ISO/TS 80004-1:2015, Nanotechnologies — Vocabulary — Part 1: Core terms
© ISO 2020 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 638-1:2020
ISO/DIS 638-1:2020(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// 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 term nanocellulose is an alternative to cellulosic nanomaterial.

Note 2 to entry: Some cellulosic nanomaterials can be composed of chemically modified cellulose.

[SOURCE: ISO/TS 20477:2017, 3.3.1, modified]
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

ratio of the mass of a test piece, after drying to constant mass at a temperature of 105 °C ± 2 °C under

specified conditions, to its mass before drying

Note 1 to entry: to entry: The dry matter content is usually expressed as a percentage mass fraction.

3.4
moisture content
content of
...