SIST EN ISO 18526-4:2020

Eye and face protection - Test methods - Part 4: Headforms (ISO 18526-4:2020)

This document specifies dimensions and tolerances on factors related to adult human anthropometry
for the preparation of headforms used for the testing of protectors.
In particular, this is given for:
— Anthropometric measurement methods.
— Anthropometric data for head and face dimensions.
— Human test panels.
— Models of headforms

Augen- und Gesichtsschutz - Prüfverfahren - Teil 4 Prüfköpfe (ISO 18526-4:2020)

Dieses Dokument legt die Maße und Toleranzen der zur Prüfung von Augen- und Gesichtsschutzgeräten zu verwendenden Prüfköpfe fest.
Zusätzlich enthält es Informationen zu:
—   anthropometrischen Messverfahren;
—   anthropometrischen Daten zu Kopf- und Gesichtsmaßen;
—   Gruppen von Versuchspersonen.

Protection des yeux et du visage - Méthodes d'essai - Partie 4: Fausses têtes (ISO 18526-4:2020)

Le présent document spécifie les dimensions et les tolérances applicables aux fausses têtes utilisées pour les essais des protecteurs des yeux et du visage.
Des informations supplémentaires sont données pour:
—          les méthodes de mesure anthropométrique;
—          les données anthropométriques pour les dimensions de la tête et du visage;
—          les panels d'essai humains.

Varovanje oči in obraza - Preskusne metode - 4. del: Modeli glav za preskušanje (ISO 18526-4:2020)

General Information

• Status: Published
• Public Enquiry End Date: 24-Jul-2018
• Publication Date: 23-Apr-2020
• ICS: 13.340.20 - Head protective equipment
• Technical Committee: OVP - Personal protecting equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-Mar-2020
• Due Date: 17-May-2020
• Completion Date: 24-Apr-2020
• Directive: 2016/425 - Regulation (EU) 2016/425 of the European Parliament and of the Council of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC
• Ref Project: EN ISO 18526-4:2020 - Eye and face protection - Test methods - Part 4: Headforms (ISO 18526-4:2020)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 18526-4:2020
01-maj-2020
Varovanje oči in obraza - Preskusne metode - 4. del: Modeli glav za preskušanje
(ISO 18526-4:2020)
Eye and face protection - Test methods - Part 4: Headforms (ISO 18526-4:2020)
Augen- und Gesichtsschutz - Prüfverfahren - Teil 4 Prüfköpfe (ISO 18526-4:2020)
Protection des yeux et du visage - Méthodes d'essai - Partie 4: Fausses têtes (ISO
18526-4:2020)
Ta slovenski standard je istoveten z: EN ISO 18526-4:2020
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
SIST EN ISO 18526-4:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 18526-4:2020

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SIST EN ISO 18526-4:2020


EN ISO 18526-4
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2020
EUROPÄISCHE NORM
ICS 13.340.20
English Version

Eye and face protection - Test methods - Part 4: Headforms
(ISO 18526-4:2020)
Protection des yeux et du visage - Méthodes d'essai - Augen- und Gesichtsschutz - Prüfverfahren - Teil 4
Partie 4: Fausses têtes (ISO 18526-4:2020) Prüfköpfe (ISO 18526-4:2020)
This European Standard was approved by CEN on 25 January 2020.

CEN 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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

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

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





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18526-4:2020 E
worldwide for CEN national Members.

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SIST EN ISO 18526-4:2020
EN ISO 18526-4:2020 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 18526-4:2020
EN ISO 18526-4:2020 (E)
European foreword
This document (EN ISO 18526-4:2020) has been prepared by Technical Committee ISO/TC 94
"Personal safety -- Personal protective equipment" in collaboration with Technical Committee CEN/TC
85 “Eye protective equipment” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2020, and conflicting national standards
shall be withdrawn at the latest by September 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 18526-4:2020 has been approved by CEN as EN ISO 18526-4:2020 without any
modification.

3

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SIST EN ISO 18526-4:2020

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SIST EN ISO 18526-4:2020
INTERNATIONAL ISO
STANDARD 18526-4
First edition
2020-02
Eye and face protection — Test
methods —
Part 4:
Headforms
Protection des yeux et du visage — Méthodes d'essai —
Partie 4: Fausses têtes
Reference number
ISO 18526-4:2020(E)
©
ISO 2020

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(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

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Headforms . 1
4.1 Classification of adult headforms. 1
4.2 Reference distances and dimensions of adult headforms . 7
4.3 Classification and dimensions of children headforms .10
4.3.1 Type1 headforms .10
4.3.2 Type 2 headforms .10
Annex A (informative) Anthropometric measurements .11
Annex B (informative) Anthropometric data for head and face dimensions .12
Bibliography .17
© ISO 2020 – All rights reserved iii

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(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 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 ISO/TC 94, Personal safety — Personal protective equipment,
Subcommittee SC 6, Eye and face protection.
A list of all parts in the ISO 18526 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.
iv © ISO 2020 – All rights reserved

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

Introduction
The family of documents comprised of the ISO 16321 series, the ISO 18526 series and the ISO 18527
series was developed in response to the worldwide stakeholders' demand for minimum requirements
and test methods for eye and face protectors traded internationally. ISO 4007 gives the terms and
definitions for all the various product types. The test methods are given in the ISO 18526 series, while
the requirements for occupational eye and face protectors are given in the ISO 16321 series. Eye
protectors for specific sports are mostly dealt with by the ISO 18527 series. A guidance document,
ISO 19734, for the selection, use and maintenance of eye and face protectors is under preparation.
The basic anatomical requirements of the users of eye and face protection are to be considered when
selecting an appropriate size of protector for comfortable and functional use. This document provides
the anthropometric and biomechanical data required to prepare headforms used for the testing of
protectors. The headform dimensions (series 1 and 2) are based on measurements of humans by the
USA's National Institute of Occupational Safety and Health (NIOSH), which is part of the Centers for
Disease Control and Prevention.
This document provides headform dimensions based on measurements of humans. Further
information is given in Annex A and Annex B, which, together with Figure 3, are reproduced with
NIOSH's and the authors' permission. Figures 2 and 3 show the headforms that are slightly modified to
show better eye detail.
© ISO 2020 – All rights reserved v

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SIST EN ISO 18526-4:2020

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SIST EN ISO 18526-4:2020
INTERNATIONAL STANDARD ISO 18526-4:2020(E)
Eye and face protection — Test methods —
Part 4:
Headforms
1 Scope
This document specifies the dimensions and tolerances of the headforms used for the testing of eye and
face protectors.
Additional information is given for:
— anthropometric measurement methods;
— anthropometric data for head and face dimensions;
— human test panels.
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 4007, Personal protective equipment — Eye and face protection — Vocabulary
CSA Z262.6:2014, Specifications for facially featured headforms
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4007 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/
4 Headforms
4.1 Classification of adult headforms
Six different sizes of headforms are used for testing as given in Table 1.
Table 1 — Classification of headforms for eye and face protectors
Small Medium Large
1-S 1-M 1-L
2-S 2-M 2-L
Statistically these six headforms cover approximately 95 % of the population included in this document.
Annex A and Annex B provide detailed information on the data collection and the human populations
© ISO 2020 – All rights reserved 1

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

that the data is measured from. The information in Annex A and Annex B are from References [2][3]
[15][16].
Examples of the headforms are given in Figures 1 and 2. The individual figures are not to the same scale
as each other, so for accurate details use the CAD files.
a)
2 © ISO 2020 – All rights reserved

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

b)
© ISO 2020 – All rights reserved 3

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

c)
NOTE Figures are not to scale.
Figure 1 — Examples of 1-L, 1-M, 1-S headforms (front and side view)
4 © ISO 2020 – All rights reserved

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

(a)
© ISO 2020 – All rights reserved 5

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

(b)
6 © ISO 2020 – All rights reserved

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

(c)
NOTE Figures are not to scale.
Figure 2 — Examples of 2-L, 2-M, 2-S headforms (front and side view)
4.2 Reference distances and dimensions of adult headforms
The reference distances that are needed for the testing of eye and face protectors are given in Figure 3.
© ISO 2020 – All rights reserved 7

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

NOTE Figures are not to scale, dimensions of the reference distances are given in Tables 2 and 3.
Figure 3 — Dimensions and reference distances
The dimensions of the reference distances for the six adult headforms as defined in Table 1 are given in
Tables 2 and 3 for reference only.
For comparison of dimensions, testing of eye and face protectors and building headforms, the CAD files
shall be used. Dimensions in the CAD file are given in millimetres (nominal, unless toleranced) and
are available from the International Standards Organisation's website https:// standards .iso .org/ iso/
18526/ -4/ ed -1/ en.
The tolerances throughout this document including Tables 2 and 3 shall follow standard engineering
drawing practice. All values for Tables 2, 3 and those in Annex B shall be ±0,1 mm. The tolerances for
manufacturers of the headforms are ±2 % when comparing the manufactured headform measurements
to the CAD data.
The dimension “Eye apex to superior attachment of the pinna (Vertical)” has been set to 1,0 mm. This
was done to provide a reference plane for the other measurements and causes the headforms to appear
to be leaning forward.
The pupil has a diameter of 5 mm, the pinhole for the attachment of the rod locating the ear point 2,0 mm.
Table 2 — Dimensions and reference distances as defined in Figure 3 for the small, medium and
large type 1 headforms
Value
mm
Dimension or reference distance
1-S 1-M 1-L
Superior attachments of the pinna
134,9 141,3 156,5
breadth (not A, but at the ear)
A Bizygomatic Breadth 131,1 136,4 150,1
B Minimum Frontal Breadth 98,2 108,1 118,4
NOTE 1  Some of these distances have been rounded to integral values for testing – refer to the appropriate
product's requirements standard.
NOTE 2  These dimensions are indicative only – the data in the CAD files are used.
8 © ISO 2020 – All rights reserved

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SIST EN ISO 18526-4:2020
ISO 18526-4:2020(E)

Table 2 (continued)
Value
mm
Dimension or reference distance
1-S 1-M 1-L
C Outer Canthal Distance 87,3 93,0 100,2
D Interpupillary Distance (PD) 60,0 64,0 68,0
E Inner Canthal Distance 36,0 35,0 43,0
F Nasal Root Breadth 17,5
...

SLOVENSKI STANDARD
oSIST prEN ISO 18526-4:2018
01-julij-2018
9DURYDQMHRþLLQREUD]D3UHVNXVQHPHWRGHGHO0RGHOLJODY]DSUHVNXãDQMH
,62',6
Eye and face protection - Test methods - Part 4: Headforms (ISO/DIS 18526-4:2018)
Augen- und Gesichtsschutz - Prüfverfahren - Teil 4 Prüfköpfe (ISO/DIS 18526-4:2018)
Protection des yeux et du visage - Méthodes d'essai - Partie 4: Fausses têtes (ISO/DIS
18526-4:2018)
Ta slovenski standard je istoveten z: prEN ISO 18526-4
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
oSIST prEN ISO 18526-4:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 18526-4:2018

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oSIST prEN ISO 18526-4:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18526-4
ISO/TC 94/SC 6 Secretariat: BSI
Voting begins on: Voting terminates on:
2018-05-18 2018-08-10
Eye and face protection — Test methods —
Part 4:
Headforms
Protection des yeux et du visage — Méthodes d'essai —
Partie 4: Fausses têtes
ICS: 13.340.20
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 18526-4:2018(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 2018

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oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
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 2018 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Headforms . 1
4.1 Adults . 1
4.2 Children . 5
Annex A (informative) Anthropometric measurements . 6
Annex B (informative) Anthropometric data for head and face dimensions .7
Bibliography .14
© ISO 2018 – All rights reserved iii

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oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(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 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.
The committee responsible for this document is ISO/TC 94, Personal safety — Personal protective
equipment, Subcommittee SC 6, Eye and face protection.
A list of all parts in the ISO 18526- series can be found on the ISO website.
iv © ISO 2018 – All rights reserved

---------------------- Page: 6 ----------------------
oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(E)

Introduction
This family of documents was developed in response to the worldwide stakeholders' demand
for minimum requirements and test methods for eye and face protectors traded internationally.
ISO 4007 gives the terms and definitions for all the various product types. The test methods are in
the ISO 18526- series, while the requirements for occupational eye and face protectors are in the
ISO 16321- series. Eye protection for specific sports is mostly dealt with by the ISO 18527- series. A
guidance document for the selection, use and maintenance of eye and face protectors is in preparation.
For an appropriate selection and use of protectors, basic anatomical demands of the users of eye and
face protection are considered.
Anthropometric and biomechanical data are required to prepare headforms used for testing of
protectors.
This document provides headform dimensions based on measurements of humans. Further information
is given in the informative Annex A and Annex B.
© ISO 2018 – All rights reserved v

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oSIST prEN ISO 18526-4:2018

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oSIST prEN ISO 18526-4:2018
DRAFT INTERNATIONAL STANDARD ISO/DIS 18526-4:2018(E)
Eye and face protection — Test methods —
Part 4:
Headforms
1 Scope
This document specifies dimensions and tolerances of the headforms used for the testing of eye and
face protectors.
Additional information are given for:
— Anthropometric measurement methods;
— Anthropometric data for head and face dimensions;
— Human test panels.
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.
CSA Z262.6:2014Specifications for facially featured headforms
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4007 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
4 Headforms
4.1 Adults
Six different sizes of headforms are used for testing as given in Table 1.
Table 1 — Classification of headforms for protectors
Small 1-S 2-S
Medium 1-M 2-M
Large 1-L 2-L
Statistically these six headforms cover approximately 95% of the population included in this document.
Annex A and Annex B provides detailed information on data collection and the human populations that
the data is measured from. The information in Annex A and Annex B are from NIOSH papers and is
printed with permission of the author.
© ISO 2018 – All rights reserved 1

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oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(E)

CAD files that may be used with 3-D printers are available from the NIOSH website for those wishing to
build their own headforms or to use this data for the testing of protectors.
To access the CAD files:
Everyone is responsible for obtaining a third-party FileZilla FTP Client capable of FTP over Secure
Shell (SSH) when using Private FTP.
The following information is needed to access the site:
Host: sftp.cdc.gov
User Name: nioshgold
Password: dlogns98
To access the FTP site, you need a program called FileZilla Client. It is free and is available for download
at https:// filezilla -project .org/ .
The information for the FTP site (Host, Username, Password, Port) is put into the appropriate fields of
the Quickconnect bar.
Clicking on Quickconnect button will connect with the folder.
Examples of the headforms are given in Figure 1 and 2. These figures are not in the same scale as other
headform pictures, for details use the CAD files.
1-L Front 1-L Side
1-M Front 1-M Side
2 © ISO 2018 – All rights reserved

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oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(E)

1-S Front 1-S Side
NOTE Figures are not to scale.
Figure 1 — Examples of 1-S, 1-M, 1-L headforms (front and side view)
2-L Front 2-L Side
2-M Front 2-M Side
2-S Front 2-S Side
NOTE Figures are not to scale.
Figure 2 — Examples of 2-S, 2-M, 2-L headforms (front and side view)
© ISO 2018 – All rights reserved 3

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oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(E)

NOTE Figures are not to scale.
Figure 3 — Reference points; dimensions given in Table 2
The dimensions given in Table 2 are for reference only.
The CAD files shall be used for comparisons and building headforms. Dimensions in the CAD file are
given in millimetres (nominal, unless toleranced).
Tolerances throughout this document including Table 2 shall follow standard engineering drawing
practice. All values for Table 2 and those in Annex B, shall be ±0,1 mm. Tolerances for manufacturers of
the headforms are ± 2 % when comparing the manufactured headform measurements with the CAD data.
The dimension “Eye Apex to superior attachment of the pinna (Vertical)” has been set to 0,0 mm. This
was done to provide a reference plane for the other measurements and causes the headforms to appear
to be leaning forward.
Table 2 — Reference distances as defined in Figure 3
Value
Dimension
1-S 1-M 1-L
Superior attachments of the pinna
138,5 mm 145,3 mm 159,1 mm
breadth (not A, but at the ear)
A Bizygomatic Breadth 131,1 mm 136,4 mm 150,1 mm
B Minimum Frontal Breadth 98,2 mm 108,1 mm 118,4 mm
C Outer Canthal Distance 87,3 mm 93,8 mm 100,2 mm
D Interpupillary Distance 59,5 mm 63,3 mm 68,2 mm
E Inner Canthal Distance 36,0 mm 35,6 mm 43,0 mm
F Nasal Root Breadth 17,5 mm 18,8 mm 20,8 mm
G Nose Bridge Length 42,4 mm 42,4 mm 47,4 mm
H Anatomical Nose Breadth 34,8 mm 39,0 mm 45,4 mm
I Morphological Nose Breadth 31,9 mm 34,3 mm 43,3 mm
Corneal Apex to superior attachment
J 87,0 mm 90,4 mm 95,1 mm
of the pinna (Horizontal)
4 © ISO 2018 – All rights reserved

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oSIST prEN ISO 18526-4:2018
ISO/DIS 18526-4:2018(E)

Table 2 (continued)
Value
Dimension
1-S 1-M 1-L
Corneal Apex to superior attachment
K 0,0 mm 0,0 mm 0,0 mm
of the pinna (Vertical)
Sagittal distance from corneal apex to
M 8,5 mm 12,2 mm 12,7 mm
lateral canthus (C-D from side view)
Value
Dimension
2-S 2-M 2-L
Superior attachments of
136,5 mm 144,7 mm 159,7 mm
the pinna breadth (not A, but at the ear)
A Bizygomatic Breadth 136,4 mm 144,5 mm 155,4 mm
B Minimum Frontal Breadth 94,5 mm 89,1 mm 113,4 mm
C Outer Canthal Distance 89,0 mm 86,5 mm 96,8 mm
D Interpupillary Distance 62,8 mm 63,1 mm 69,9 mm
E Inner Canthal Distance 36,2 mm 36,7 mm 43,5 mm
F Nasal Root Breadth 18,6 mm 18,6 mm 21,2 mm
G Nose Bridge Length 37,9 mm 41,0 mm 45,0 mm
H Anatomical Nose Breadth 36,6 mm 40,8 mm 40,7 mm
I Morphological Nose Breadth 34,6 mm 37,6 mm 38,7 mm
Corneal Apex to superior attachment of
J 82,8 mm 89,0 mm 92,5 mm
the pinna (Horizontal)
Corneal Apex to superior attachment of
K 0,0 mm 0,0 mm 0,0 mm
the pinna (Vertical)
Sagittal distance from corneal apex to
M 6,6 mm 8,0 mm 8,9 mm
lateral canthus (C-D from side view)
4.2 Children
If the eye and/or face protector are intended for use by children, the applicable headforms shall also
include headforms size 535 and 515 defined in CSA Z262.6:2014, Figures 3 and 4, with the exception
that the interpupillary distance for the size 515 headform shall be 52 mm. For the purposes of this
document, these s
...