prEN IEC 63241-1:2026

• Abstract:

  This document specifies general requirements for the dust measurement of electric motor-operated tools supplied from mains or from batteries. This document applies to those tools with and without a dust extraction unit where dust such as mineral dust containing silica or wood dust is expected.

• Status: Not Published
• Publication Date: 25-Jul-2028
• ICS: 25.140.30 - Hand-operated tools
• Technical Committee: CLC/TC 116 - Safety of hand-held motor-operated electric tools
• Drafting Committee: CLC/TC 116/WG 04 - Dust
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 11-Sep-2026
• Due Date: 24-Feb-2027
• Completion Date: 11-Sep-2026
• Ref Project: oSIST prEN IEC 63241-1:2026 - Electric motor-operated tools - Dust measurement procedure - Part 1: General requirements

• Refers: ISO 7708:1995 - Air quality — Particle size fraction definitions for health-related sampling
• Effective Date: 15-Sep-2026

prEN IEC 63241-1:2026 is a CENELEC draft European Standard for measuring dust from electric motor-operated tools. It specifies general requirements for tools supplied from mains or batteries, with or without a dust extraction unit, where mineral dust containing silica or wood dust is expected.

The document is written for manufacturers, testing organizations, and anyone who needs comparable dust-emission data for these tools. It sets a common measurement procedure so results from different laboratories can be compared.

What does prEN IEC 63241-1:2026 specify?

prEN IEC 63241-1:2026 specifies the general dust measurement procedure for electric motor-operated tools. It applies to mains-powered and battery-powered tools and gives the test setup, measurement approach, instrumentation, and reporting content needed to measure dust emission under standardized conditions.

The document is organized into:

• Clause 1 - Scope
• Clause 2 - Normative references
• Clause 3 - Terms and definitions
• Clause 4 - Test procedure
• Clause 5 - Instrumentation
• Clause 6 - Information to be reported
• Annex ZA - Normative references to international publications with corresponding European publications

The foreword also states that this draft is used together with EN IEC 63241-2 and EN IEC 63241-3, which add or modify requirements for particular tool types.

What are the key requirements of prEN IEC 63241-1:2026?

prEN IEC 63241-1:2026 focuses on a controlled test room, defined operating conditions, and consistent sampling so that dust results are repeatable. In practice, that means the tool, the operator, the dust sampler, and the workpiece must all be arranged the same way from test to test.

Test room and dust sampling

The test room is required to be similar to the room method used in EN 1093-9. It must be kept clean, have no room ventilation during the measurement, and be large enough to keep the tool at least 2.0 m from walls and the ceiling.

Dust samplers are worn in the upper chest zone of the operator. When both inhalable dust and respirable dust are measured, the document requires samplers on both sides of the upper chest zone and an additional inhalable sampler placed close to one of the respirable samplers. This matters because sampler placement directly affects the measured concentration.

The samplers must comply with EN 13205 and be suitable for the dust fraction being measured under ISO 7708 particle-size definitions. Filters are specified for the sampler media, so the test lab must use suitable equipment rather than any general-purpose dust collector.

Operating conditions and tool setup

The ambient temperature and humidity are controlled during the test. The operator must be skilled and experienced with the tool, and the cooling air outlet should not blow toward the samplers if that can be avoided.

The standard requires the tool to be tested under working conditions with the material, accessory, bit, cutter, or abrasive intended by the manufacturer. Voltage, frequency, and speed settings are chosen to give the highest tool output speed without exceeding the accessory recommendation. All test parameter settings are held within a narrow tolerance, so the result reflects the tool rather than the test setup.

Dust extraction units and battery tools

If the tool uses an external dust extraction unit, it is connected and maintained according to the manufacturer’s instructions. The unit starts each 1 h test with a new filter, and emptying is controlled so it does not distort the measurement. For integral dust extraction units, changing or emptying follows the instructions for that unit.

Battery tools have additional conditioning and rest requirements before testing. Fully charged batteries are used, and the test plan covers the battery type and capacity chosen for the measurement. This keeps battery state from becoming a hidden variable in the result.

Test series and acceptance

Each measurement series consists of three tests by one operator. The document defines an acceptance check based on the variation among the three concentration values. If the variation is low enough, the results are accepted.

Reporting

The test report must identify the tool, accessories, test material, operating conditions, dust extraction unit, test room, measuring instruments, environmental data, dust concentrations, mean values, uncertainty, testing institution, date, responsible person, and any remarks. This is the record buyers, manufacturers, and labs use to interpret and compare results.

What terms does prEN IEC 63241-1:2026 define?

• Accessory - A device attached only to the output mechanism of the tool.
• Detachable battery pack - A battery in a separate enclosure that is removed from the tool for charging.
• Dust - Solid material dispersed in gas and generated by mechanical processes.
• Dust extraction unit - A suction device connected to the tool outlet or a dust-capturing attachment to collect emitted dust.
• Dust sampler - A device that collects dust on a filter after drawing in dust-laden air.
• Inhalable dust - The dust fraction that can be taken up by the respiratory system.
• Respirable dust - The dust fraction that can reach the alveoli and bronchia.
• Separable battery pack - A battery in a separate enclosure that is connected to the tool by a cord.

Who uses prEN IEC 63241-1:2026?

Manufacturers of electric motor-operated tools use prEN IEC 63241-1:2026 to measure dust emission under standardized conditions. Testing laboratories and testing organizations use it to run the measurement procedure and produce comparable results.

It is also used for declaration of dust emission, for comparing tools of the same type, and for preliminary assessment of dust exposure at a workplace. That makes it relevant to product development, quality control, and buyer evaluation where dust exposure is part of the decision.

What changed in prEN IEC 63241-1:2026 from the previous edition?

prEN IEC 63241-1:2026 carries the text of IEC 63241-1:2023.

Which standards are used with prEN IEC 63241-1:2026?

• EN 1093-9:1998/A1:2008 - Provides the room method used for dust emission measurement.
• EN 13205 (all parts) - Provides sampler performance assessment for airborne particle measurements.
• ISO 7708:1995 - Provides the particle-size fraction definitions used for inhalable and respirable dust.
• EN IEC 63241-2 - Supplies product-specific clauses that supplement or modify this part.
• EN IEC 63241-3 - Supplies product-specific clauses that supplement or modify this part.

What does the prEN IEC 63241-1:2026 document contain?

prEN IEC 63241-1:2026 contains the full test procedure for dust measurement, including the test room arrangement, sampler placement, operating conditions, battery conditioning, dust extraction unit handling, and acceptance criteria. It also specifies the required measuring instrumentation for electrical and climatic conditions.

Clause 6 gives the reporting items needed to document a test result clearly. Figures 1 and 2 show the positions of the dust samplers and workpiece for one dust fraction or two dust fractions, which helps the test lab set up the operator position consistently.

SLOVENSKI STANDARD
01-november-2026
Elektromotorna orodja - Postopek meritve prahu - 1. del: Splošne zahteve
Electric motor-operated tools - Dust measurement procedure - Part 1: General
requirements
Motorbetriebene Elektrowerkzeuge - Staubmessverfahren - Teil 1: Allgemeine
Anforderungen
Outils électroportatifs à moteur - Procédure de mesure de la poussière - Partie 1:
Exigences générales
Ta slovenski standard je istoveten z: prEN IEC 63241-1:2026
ICS:
25.140.30 Orodja za ročno uporabo Hand-operated tools
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD DRAFT
prEN IEC 63241-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2026
ICS 25.140.30 -
English Version
Electric motor-operated tools - Dust measurement procedure -
Part 1: General requirements
(IEC 63241-1:2023)
Outils électroportatifs à moteur - Procédure de mesure de la Motorbetriebene Elektrowerkzeuge - Staubmessverfahren -
poussière - Partie 1: Exigences générales Teil 1: Allgemeine Anforderungen
(IEC 63241-1:2023) (IEC 63241-1:2023)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-12-04.

The text of this draft consists of the text of IEC 63241-1:2023 (116/415(F)/CDV).

If this draft becomes a European Standard, CENELEC 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.

This draft European Standard was established by CENELEC in three official versions (English, French, German).
A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to
the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

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.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 83397 Ref. No. prEN IEC 63241-1:2026 E

European foreword
This document (prEN IEC 63241-1:2026), consists of the text of IEC 63241-1:2023, prepared by
IEC/TC 116 " Safety of motor-operated electric tools”.
This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this document (doa) dav + 6 months
has to be announced at national level
• latest date by which this document has to be (dop) dav + 12 months
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) dav + 36 months
conflicting with this document have to be withdrawn (to be confirmed or
modified when voting)
This document is read in conjunction with EN IEC 63241-2 and EN IEC 63241-3.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year

Safety of machinery – Evaluation of the EN 1093-9 1998
emission of airborne hazardous
substances – Part 9: Pollutant
concentration parameter, room method

+ A1 2008
Workplace exposure – Assessment of EN 13205 series
sampler performance for measurement of
airborne particle concentrations
ISO 7708 1995 Air quality - Particle size fraction definitions - -
for health-related sampling
IEC 63241-1 ®
Edition 1.0 2023-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated tools – Dust measurement procedure –

Part 1: General requirements
Outils électroportatifs à moteur – Procédure de mesure de la poussière –

Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.30 ISBN 978-2-8322-7090-5

– 2 – IEC 63241-1:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test procedure . 8
4.1 General . 8
4.2 Test room and equipment . 8
4.3 Operating conditions . 9
4.4 Acceptance criteria . 11
5 Instrumentation . 11
5.1 Instrumentation for measuring operating conditions . 11
5.2 Instrumentation for measuring climatic conditions . 11
6 Information to be reported . 12

Figure 1 – Positions of dust samplers and workpiece for the measurement of only one
dust fraction . 13
Figure 2 – Positions of dust samplers and workpiece for the measurement of two dust
fractions . 14

IEC 63241-1:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED TOOLS –
DUST MEASUREMENT PROCEDURE –
Part 1: General requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
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assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 63241-1 has been prepared by IEC technical committee 116: Safety of motor-operated
electric tools. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
116/655/FDIS 116/666/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
The language used for the development of this International Standard is English.
This document is to be used in conjunction with the appropriate parts of IEC 63241-2 or
IEC 63241-3, which contain clauses that supplement or modify the corresponding clauses in
this document to provide the relevant requirements for each type of product.

– 4 – IEC 63241-1:2023 © IEC 2023
The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
notes: in small roman type.
–
The terms defined in Clause 3 are printed in bold typeface.
A list of all parts of the IEC 63241 series, under the general title: Electric motor-operated tools –
Dust measurement procedure, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation nationally
not earlier than 36 months from the date of publication.

IEC 63241-1:2023 © IEC 2023 – 5 –
INTRODUCTION
Inhalable dust emitted by electric motor-operated tools can present a hazard to the operator
and other exposed persons.
Therefore, this document specifies a procedure to measure the dust concentration produced
by an electric power tool under standardized conditions representing typical applications.
However, the dust concentration during actual use of the power tool can differ from the dust
concentration measured in accordance with this document depending on the ways in which the
tool is used.
The results of dust measurements can be used
– for a declaration of the dust emission;
– for comparing the dust emission from tools of the same type; or
– in a preliminary assessment of dust exposure at a workplace.
For all purposes, it is important to specify measurement procedures with known accuracy so
that the results of measurements taken by different laboratories can be compared.
The measurements of dust concentration are made in accordance with EN 1093-9:1998 and
EN 1093-9:1998/A1:2008 for the test room.

– 6 – IEC 63241-1:2023 © IEC 2023
ELECTRIC MOTOR-OPERATED TOOLS –
DUST MEASUREMENT PROCEDURE –
Part 1: General requirements
1 Scope
This document specifies general requirements for the dust measurement of electric motor-
operated tools supplied from mains or from batteries. This document applies to those tools with
and without a dust extraction unit where dust such as mineral dust containing silica or wood
dust is expected.
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.
EN 1093-9:1998, Safety of machinery – Evaluation of the emission of airborne hazardous
substances – Part 9: Pollutant concentration parameter, room method
EN 1093-9:1998/A1:2008
EN 13205 (all parts), Workplace exposure – Assessment of sampler performance for
measurement of airborne particle concentrations
ISO 7708:1995, Air quality – Particle size fraction definitions for health-related sampling
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:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
accessory
device that is attached only to the output mechanism of the tool
3.2
detachable battery pack
battery which is contained in a separate enclosure from the battery tool and is intended to be
rem
...