prEN ISO 5537

Dried milk and dried milk products - Determination of moisture content (Reference method) (ISO/DIS 5537:2022)

This deliverable specifies a method for the determination of the moisture content of all types of dried milk. The revised version will include the results of a recently conducted interlaboratory study in whey powders, dairy permeate powders, cream powder and powdered infant formula in ISO 5537|IDF 26 to further underpin the extent of its scope.

Milchpulver - Bestimmung des Wassergehaltes (Referenzverfahren) (ISO/DIS 5537:2022)

Lait sec et produits à base de lait sec - Détermination du taux d’humidité (méthode de référence)(ISO/DIS 5537:2022)

Mleko v prahu in sušeni mlečni proizvodi - Določevanje vlage (referenčna metoda) (ISO/DIS 5537:2022)

General Information

• Status: Not Published
• Publication Date: 09-Dec-2024
• ICS: 67.100.10 - Milk and processed milk products
• Technical Committee: CEN/TC 302 - Milk and milk products - Methods of sampling and analysis
• Drafting Committee: CEN/TC 302 - Milk and milk products - Methods of sampling and analysis
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 06-Feb-2023
• Completion Date: 06-Feb-2023
• Ref Project: oSIST prEN ISO 5537:2023 - Dried milk and dried milk products - Determination of moisture content (Reference method) (ISO/DIS 5537:2022)

Relations

• Revises: EN ISO 5537:2004 - Dried milk - Determination of moisture content (Reference method) (ISO 5537:2004)
• Effective Date: 29-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 5537:2023
01-januar-2023
Mleko v prahu in suhi mlečni proizvodi - Določevanje vlage (referenčna metoda)
(ISO/DIS 5537:2022)

Dried milk and dried milk products - Determination of moisture content (Reference

method) (ISO/DIS 5537:2022)
Milchpulver - Bestimmung des Wassergehaltes (Referenzverfahren) (ISO/DIS
5537:2022)

Lait sec et produits à base de lait sec - Détermination du taux d’humidité (méthode de

référence) (ISO/DIS 5537:2022)
Ta slovenski standard je istoveten z: prEN ISO 5537
ICS:
67.100.10 Mleko in predelani mlečni Milk and processed milk
proizvodi products
oSIST prEN ISO 5537:2023 en,fr,de

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

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oSIST prEN ISO 5537:2023
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oSIST prEN ISO 5537:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 5537
IDF 26
ISO/TC 34/SC 5 Secretariat: NEN
Voting begins on: Voting terminates on:
2022-11-14 2023-02-06
Dried milk and dried milk products — Determination of
moisture content (Reference method)
ICS: 67.100.10
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
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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 numbers
NATIONAL REGULATIONS.
ISO/DIS 5537:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
IDF 26:2022(E)
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO and IDF 2022
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oSIST prEN ISO 5537:2023
ISO/DIS 5537:2022(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 5537
IDF 26
ISO/TC 34/SC 5 Secretariat: NEN
Voting begins on: Voting terminates on:
Dried milk and dried milk products — Determination of
moisture content (Reference method)
ICS: 67.100.10
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
© ISO and IDF 2022 THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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THEREFORE SUBJECT TO CHANGE AND MAY

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

NOT BE REFERRED TO AS AN INTERNATIONAL

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below STANDARD UNTIL PUBLISHED AS SUCH.

or ISO’s member body in the country of the requester.
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NATIONAL REGULATIONS.
Website: www.iso.org Website: www.fil-idf.org ISO/DIS 5537:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
IDF 26:2022(E)
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
© ISO and IDF 2022 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO and IDF 2022
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oSIST prEN ISO 5537:2023
ISO/DIS 5537:2022(E)
IDF 26:2022(E)
Contents Page

Forewords .....................................................................................................................................................................................................................................iv

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

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

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

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

5 Apparatus .................................................................................................................................................................................................................... 1

6 Sampling ....................................................................................................................................................................................................................... 2

7 Preparation of test sample ........................................................................................................................................................................ 3

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

8.1 Preparation of column ..................................................................................................................................................................... 3

8.2 Preparation of test portion .......................................................................................................................................................... 3

8.3 Determination ......................................................................................................................................................................................... 4

9 Calculation and expression of results ........................................................................................................................................... 4

9.1 Calculation .................................................................................................................................................................................................. 4

9.2 Expression of test results.............................................................................................................................................................. 4

10 Precision ....................................................................................................................................................................................................................... 4

10.1 Interlaboratory test ......... ................................................................................................................................................................... 4

10.2 Repeatability ............................................................................................................................................................................................ 4

10.3 Reproducibility ........................................................................................................................................... ............................................ 5

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

Annex A (informative) Drying apparatus ....................................................................................................................................................... 6

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

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

iii
© ISO and IDF 2022 – All rights reserved
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oSIST prEN ISO 5537:2023
ISO/DIS 5537:2022(E)
IDF 26:2022(E)
Forewords

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 34, Food products, Subcommittee SC 5,

Milk and milk products, and the International Dairy Federation (IDF) It is being published jointly by ISO

and IDF.

This second edition of ISO 5537|IDF 26 cancels and replaces the first edition of ISO 5537|IDF 26:2004, to

which precision data for additional matrices were added.

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 and IDF 2022 – All rights reserved
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oSIST prEN ISO 5537:2023
ISO/DIS 5537:2022(E)
IDF 26:2022(E)

IDF (the International Dairy Federation) is a non-profit private sector organization representing the

interests of various stakeholders in dairying at the global level. IDF members are organized in National

Committees, which are national associations composed of representatives of dairy-related national

interest groups including dairy farmers, dairy processing industry, dairy suppliers, academics and

governments/food control authorities.

ISO and IDF collaborate closely on all matters of standardization relating to methods of analysis

and sampling for milk and milk products. Since 2001, ISO and IDF jointly publish their International

Standards using the logos and reference numbers of both organizations.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. IDF 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).

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

constitute an endorsement.

This document was prepared by the IDF Standing Committee on Analytical Methods for Composition and

ISO Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk products. It is

being published jointly by ISO and IDF.

The work was carried out by the IDF/ISO Action Team C54 of the Standing Committee on Analytical

Methods for Composition under the aegis of its project leader Dr H. van den Bijgaart (NL).

© ISO and IDF 2022 – All rights reserved
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oSIST prEN ISO 5537:2023
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oSIST prEN ISO 5537:2023
ISO/DIS 5537:2022(E)
DRAFT INTERNATIONAL STANDARD
IDF 26:2022(E)
Dried milk and dried milk products — Determination of
moisture content (Reference method)

WARNING — The use of this document may involve the use of hazardous materials, operations,

and equipment. This standard does not purport to address all the safety risks associated with

its use. It is the responsibility of the user of this standard to establish appropriate safety and

health practices and determine the applicability of local regulatory limitations prior to use.

1 Scope

This document specifies a method for the determination of the moisture content of all types of dried

milk and dried milk products.
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
moisture content

mass fraction of substances determined by the procedure specified in this document

Note 1 to entry: The moisture content is expressed as a percentage by mass.
4 Principle

A test portion is dried in a drying oven set at 87 °C for 5 h while dry air is passed through the test

portion. The loss of mass of the t
...