oSIST 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
• Public Enquiry End Date: 29-Nov-2026
• ICS: 25.140.30 - Hand-operated tools
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 17-Sep-2026
• Due Date: 04-Feb-2027
• Ref Project: prEN IEC 63241-1:2026 - Electric motor-operated tools - Dust measurement procedure - Part 1: General requirements

• Refers: SIST ISO 7708:1997 - Air quality - Particle size fraction definitions for health-related sampling
• Effective Date: 15-Sep-2026

oSIST prEN IEC 63241-1:2026 is the Slovenian version of the draft European Standard prEN IEC 63241-1:2026 issued by SIST within CENELEC. It sets general requirements for measuring dust from electric motor-operated tools powered from mains or batteries, with or without a dust extraction unit, where mineral dust containing silica or wood dust is expected. It is written for manufacturers, test laboratories, and others who need comparable dust emission results.

What does oSIST prEN IEC 63241-1:2026 specify?

oSIST prEN IEC 63241-1:2026 specifies the general procedure for dust measurement on electric motor-operated tools. The method is intended to give comparable dust concentration results under standardized conditions, not to describe actual use at every workplace.

The standard applies to tools used with mains or battery supply and to tools with or without a dust extraction unit. It is used together with EN IEC 63241-2 and EN IEC 63241-3, which add or modify requirements for specific product types.

Annex	What it covers
ZA	Normative references to international publications and the corresponding European publications

The document is organized into six clauses:

• Scope
• Normative references
• Terms and definitions
• Test procedure
• Instrumentation
• Information to be reported

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

Clause 4 makes the test a controlled workplace simulation. The tool is tested under working conditions in a defined test room, and the result is based on dust concentration, not only on whether dust is visible.

Clause 4.2 defines the test setup. The room must be clean, free from other fixed air-polluting sources, and without ventilation during the test. Dust samplers are worn in the operator’s upper chest zone, and for bench work the distance between the workpiece and sampler intake openings is set before testing. In practice, this is what makes the measurement repeatable from one lab to another.

Clause 4.3 sets the operating conditions. Tests run at 15 °C to 30 °C and at relative humidity up to 75 %. A normal test consists of five cycles of 10 minutes working time and 2 minutes rest time, with longer or split cycles allowed for some battery tools. The tool must be run with the correct supply, speed setting, accessory, and work material, and all test parameters are kept within ±2 %.

Clause 4.3 also controls dust extraction units and batteries. External dust extraction units are used and maintained as instructed by the manufacturer, and integral units are changed or emptied according to their instructions. Battery tools must use fully conditioned batteries, with a rest period after charging, and detachable or separable battery packs are selected according to the manufacturer’s instructions. This matters because the power source and extraction system can change the measured dust level.

Clause 4.4 defines acceptance of a test series. The three test results are checked by the coefficient of variation, and the series is accepted only when that variation is below 0.5. That gives users a simple stability check before they report results.

Clause 5 sets measurement accuracy. Voltage, temperature, humidity, and other electrical conditions have specified instrument tolerances, so the measuring system itself does not distort the result. Clause 6 then requires a detailed report covering the tool, accessories, test material, extraction unit, room setup, instruments, environmental data, dust concentrations, mean values, and uncertainty.

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

• accessory - a device attached only to the output mechanism of the tool.
• dust extraction unit - a suction device connected to the tool’s dust outlet or dust capturing attachment to collect emitted dust.
• dust sampler - a device that collects inhalable or respirable dust by drawing dust-laden air through a filter.
• inhalable dust - the dust fraction that can enter the respiratory system according to ISO 7708:1995.
• respirable dust - the dust fraction that can reach the alveoli and bronchia according to ISO 7708:1995.
• detachable battery pack - a battery in a separate enclosure that is removed from the tool for charging.
• separable battery pack - a battery in a separate enclosure connected to the tool by a cord.

Who uses oSIST prEN IEC 63241-1:2026?

Manufacturers of electric motor-operated tools use this standard to measure and declare dust emission data. Testing laboratories use it to set up the room, samplers, operating conditions, and report format. Quality managers, certification bodies, and buyers use it when comparing tools of the same type or reviewing evidence for dust emission claims. It is also relevant where dust exposure is assessed in a preliminary way for workplace use.

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

• EN 1093-9:1998 and EN 1093-9:1998/A1:2008 - provide the test-room method for measuring airborne pollutant concentration.
• EN 13205 (all parts) - gives sampler performance assessment for airborne particle concentration measurement.
• ISO 7708:1995 - defines the inhalable and respirable particle size fractions used by the method.
• EN IEC 63241-2 - adds product-specific requirements for the relevant tool type.
• EN IEC 63241-3 - adds product-specific requirements for the relevant tool type.

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

The document contains the general test procedure, the test-room and sampler layout, the operating conditions for mains and battery tools, the instrumentation tolerances, and the reporting checklist. Figures 1 and 2 show sampler positions for measuring one dust fraction or two dust fractions. Clause 4.4 gives the acceptance calculation for repeatability, and Clause 6 defines the report content used for declarations, comparisons, and test records.

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,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
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.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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
...