Eye and face protection - Test methods - Part 3: Physical and mechanical properties (ISO 18526-3:2020)

This document specifies the reference test methods for determining the physical and mechanical
properties of protectors.
This document does not apply to any eye and face protection requirement standards which refer to
other test method standards.
Other test methods may be used if shown to be equivalent.

Augen- und Gesichtsschutz - Prüfverfahren - Teil 3: Physikalische und mechanische Eigenschaften (ISO 18526-3:2020)

Dieses Dokument legt die Bezugsprüfverfahren für die Bestimmung der physikalischen und mechanischen Eigenschaften von Augen- und Gesichtsschutzgeräten fest.
Dieses Dokument gilt nicht für etwaige Anforderungsnormen für Augen- und Gesichtsschutzprodukte, für die andere Prüfverfahren festgelegt sind.
Andere Prüfverfahren können angewendet werden, sofern ihre Gleichwertigkeit nachgewiesen ist und ihre Präzision die für das Referenzverfahren geforderte nicht übersteigt.

Protection des yeux et du visage - Méthodes d'essai - Partie 3: Propriétés physiques et mécaniques (ISO 18526-3:2020)

Le présent document spécifie les méthodes d'essai de référence pour la détermination des propriétés physiques et mécaniques des protecteurs des yeux et du visage.
Le présent document ne s'applique à aucun produit relatif à la protection des yeux et du visage pour lequel la norme d'exigences spécifie d'autres méthodes d'essai.
D'autres méthodes d'essai peuvent être utilisées si leur équivalence est démontrée et si les incertitudes de mesure qui leur sont associées n'excèdent pas celles exigées par la méthode de référence.

Varovanje oči in obraza - Preskusne metode - 3. del: Fizikalne in mehanske lastnosti (ISO 18526-3:2020)

General Information

Status
Published
Public Enquiry End Date
24-Jul-2018
Publication Date
12-Mar-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
06-Feb-2020
Due Date
12-Apr-2020
Completion Date
13-Mar-2020

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SLOVENSKI STANDARD
SIST EN ISO 18526-3:2020
01-april-2020
Varovanje oči in obraza - Preskusne metode - 3. del: Fizikalne in mehanske
lastnosti (ISO 18526-3:2020)

Eye and face protection - Test methods - Part 3: Physical and mechanical properties

(ISO 18526-3:2020)

Augen- und Gesichtsschutz - Prüfverfahren - Teil 3: Physikalische und mechanische

Eigenschaften (ISO 18526-3:2020)

Protection des yeux et du visage - Méthodes d'essai - Partie 3: Propriétés physiques et

mécaniques (ISO 18526-3:2020)
Ta slovenski standard je istoveten z: EN ISO 18526-3:2020
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
SIST EN ISO 18526-3:2020 en

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

---------------------- Page: 1 ----------------------
SIST EN ISO 18526-3:2020
---------------------- Page: 2 ----------------------
SIST EN ISO 18526-3:2020
EN ISO 18526-3
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 13.340.20
English Version
Eye and face protection - Test methods - Part 3: Physical
and mechanical properties (ISO 18526-3:2020)

Protection des yeux et du visage - Méthodes d'essai - Augen- und Gesichtsschutz - Prüfverfahren - Teil 3:

Partie 3: Propriétés physiques et mécaniques (ISO Physikalische und mechanische Eigenschaften (ISO

18526-3:2020) 18526-3:2020)
This European Standard was approved by CEN on 7 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 18526-3:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 18526-3:2020
EN ISO 18526-3:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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

This document (EN ISO 18526-3:2020) 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 July 2020, and conflicting national standards shall be

withdrawn at the latest by July 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.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

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 18526-3:2020 has been approved by CEN as EN ISO 18526-3:2020 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 18526-3:2020
---------------------- Page: 6 ----------------------
SIST EN ISO 18526-3:2020
INTERNATIONAL ISO
STANDARD 18526-3
First edition
2020-01
Eye and face protection — Test
methods —
Part 3:
Physical and mechanical properties
Protection des yeux et du visage — Méthodes d'essai —
Partie 3: Propriétés physiques et mécaniques
Reference number
ISO 18526-3:2020(E)
ISO 2020
---------------------- Page: 7 ----------------------
SIST EN ISO 18526-3:2020
ISO 18526-3:2020(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: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 18526-3:2020
ISO 18526-3:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................vi

Introduction ..............................................................................................................................................................................................................................vii

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

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

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

4 Preparatory information ............................................................................................................................................................................. 1

5 General test requirements ......................................................................................................................................................................... 2

6 Physical test methods ...................................................................................................................................................................................... 2

6.1 Physical inspection .............................................................................................................................................................................. 2

6.1.1 Principle .................................................................................................................................................................................. 2

6.1.2 Procedure ............................................................................................................................................................................... 2

6.1.3 Test report ............................................................................................................................................................................. 2

6.2 Field of view .............................................................................................................................................................................................. 3

6.2.1 Principle .................................................................................................................................................................................. 3

6.2.2 Apparatus ............................................................................................................................................................................... 3

6.2.3 Procedure ............................................................................................................................................................................... 3

6.2.4 Test report ............................................................................................................................................................................. 3

6.3 Area to be protected — Assessment from the frontal direction .................................................................. 4

6.3.1 Principle .................................................................................................................................................................................. 4

6.3.2 Apparatus ............................................................................................................................................................................... 4

6.3.3 Procedure ............................................................................................................................................................................... 4

6.3.4 Test report ............................................................................................................................................................................. 4

6.4 Area to be protected — Assessment from the lateral direction ................................................................... 4

6.4.1 Principle .................................................................................................................................................................................. 4

6.4.2 Apparatus ............................................................................................................................................................................... 4

6.4.3 Procedure ............................................................................................................................................................................... 4

6.4.4 Test report ............................................................................................................................................................................. 5

6.5 Retention by headbands and harnesses (sit and fit) .............................................................................................. 5

6.5.1 Principle .................................................................................................................................................................................. 5

6.5.2 Procedure ............................................................................................................................................................................... 5

6.5.3 Test report ............................................................................................................................................................................. 5

6.6 Visual assessment of material and surface quality of lenses .......................................................................... 5

6.6.1 Principle .................................................................................................................................................................................. 5

6.6.2 Apparatus ............................................................................................................................................................................... 5

6.6.3 Procedure ............................................................................................................................................................................... 6

6.6.4 Test report ............................................................................................................................................................................. 6

6.7 Resistance to thermal exposure ............................................................................................................................................... 6

6.7.1 Principle .................................................................................................................................................................................. 6

6.7.2 Procedure ............................................................................................................................................................................... 7

6.7.3 Test report ............................................................................................................................................................................. 7

6.8 Resistance to ultraviolet radiation ......................................................................................................................................... 7

6.8.1 Principle .................................................................................................................................................................................. 7

6.8.2 Solar ultraviolet radiation ........................................................................................................................................ 7

6.8.3 Ultraviolet radiation from artificial sources............................................................................................. 9

6.9 Resistance to corrosion ................................................................................................................................................................... 9

6.9.1 Principle .................................................................................................................................................................................. 9

6.9.2 Reagents and materials ...........................................................................................................................................10

6.9.3 Procedure ............................................................................................................................................................................10

6.9.4 Test report ..........................................................................................................................................................................10

6.10 Resistance to ignition .....................................................................................................................................................................10

6.10.1 Principle ...............................................................................................................................................................................10

6.10.2 Apparatus ............................................................................................................................................................................10

© ISO 2020 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 18526-3:2020
ISO 18526-3:2020(E)

6.10.3 Procedure ............................................................................................................................................................................10

6.10.4 Test report ..........................................................................................................................................................................11

6.11 Resistance to fogging of lenses or filters .......................................................................................................................11

6.11.1 Principle ...............................................................................................................................................................................11

6.11.2 Apparatus ............................................................................................................................................................................11

6.11.3 Conditioning .....................................................................................................................................................................12

6.11.4 Procedure ............................................................................................................................................................................12

6.11.5 Test report ..........................................................................................................................................................................13

6.12 Protection against droplets .......................................................................................................................................................13

6.12.1 Principle ...............................................................................................................................................................................13

6.12.2 Reagents, material and apparatus .................................................................................................................13

6.12.3 Procedure ............................................................................................................................................................................13

6.12.4 Test report ..........................................................................................................................................................................14

6.13 Protection against streams of liquids ...............................................................................................................................14

6.13.1 Principle ...............................................................................................................................................................................14

6.13.2 Reagents, materials and apparatus ...............................................................................................................14

6.13.3 Procedure ............................................................................................................................................................................15

6.13.4 Test report ..........................................................................................................................................................................15

6.14 Protection against large dust particles............................................................................................................................16

6.14.1 Test principle ...................................................................................................................................................................16

6.14.2 Material and apparatus ...........................................................................................................................................16

6.14.3 Procedure ............................................................................................................................................................................17

6.14.4 Test report ..........................................................................................................................................................................18

6.15 Protection against gases and fine dust ............................................................................................................................18

6.15.1 Principle ...............................................................................................................................................................................18

6.15.2 Apparatus ............................................................................................................................................................................18

6.15.3 Procedure ............................................................................................................................................................................19

6.15.4 Test report ..........................................................................................................................................................................19

6.16 Protection against radiant heat .............................................................................................................................................19

6.16.1 Principle ...............................................................................................................................................................................19

6.16.2 Test apparatus .................................................................................................................................................................19

6.16.3 Preparation of the test sample ..........................................................................................................................20

6.16.4 Procedure ............................................................................................................................................................................20

6.16.5 Test report ..........................................................................................................................................................................21

6.17 Chemical resistance .........................................................................................................................................................................21

6.17.1 Principle ...............................................................................................................................................................................21

6.17.2 Procedure ............................................................................................................................................................................21

6.17.3 Test report ..........................................................................................................................................................................21

7 Mechanical test methods ..........................................................................................................................................................................21

7.1 General ........................................................................................................................................................................................................21

7.2 Tests on unmounted lenses .......................................................................................................................................................22

7.2.1 Minimum robustness of unmounted lenses (static load test) ...............................................22

7.2.2 Drop ball test for unmounted lenses ...........................................................................................................25

7.3 Tests on complete eye protectors ........................................................................................................................................27

7.3.1 Drop ball test for complete protectors .......................................................................................................27

7.3.2 Ballistic impact test for complete protectors .......................................................................................28

7.3.3 High mass test for complete protectors ....................................................................................................29

7.4 Resistance to surface damage due to flying fine particles ..............................................................................31

7.4.1 Principle ...............................................................................................................................................................................31

7.4.2 Material and apparatus ...........................................................................................................................................31

7.4.3 Preparation of reference samples for measurement of light scatter ...............................33

7.4.4 Preparation of test samples .................................................................................................................................34

7.4.5 Procedure ............................................................................................................................................................................34

7.4.6 Evaluation of narrow angle scatter of the test sample .................................................................34

7.4.7 Evaluation of wide angle scatter of the test sample .......................................................................34

7.4.8 Test report ..........................................................................................................................................................................35

7.5 Penetration of vents and gaps .................................................................................................................................................35

7.5.1 Principle ...............................................................................................................................................................................35

iv © ISO 2020 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 18526-3:2020
ISO 18526-3:2020(E)

7.5.2 Apparatus ............................................................................................................................................................................35

7.5.3 Procedure ............................................................................................................................................................................36

7.5.4 Test report ..........................................................................................................................................................................36

7.6 Protection against molten metals and hot solids ...................................................................................................36

7.6.1 Adherence of molten metal ..................................................................................................................................36

7.6.2 Resistance to penetration of protector by hot solids ....................................................................39

8 Marking and packaging ..............................................................................................................................................................................40

8.1 Principle .....................................................................................................................................................................................................40

8.2 Procedure .................................................................................................................................................................................................40

8.3 Test report ................................................................................................................................................................................................40

9 Information to be supplied by the manufacturer ............................................................................................................40

9.1 Principle .....................................................................................................................................................................................................40

9.2 Procedure .................................................................................................................................................................................................40

9.3 Test report ................................................................................................................................................................................................40

10 Additional test methods for protectors during welding and related techniques ..........................41

10.1 Dimension measurements of welding hand shields ............................................................................................41

10.1.1 Procedure ............................................................................................................................................................................41

10.1.2 Test report ......................................
...

SLOVENSKI STANDARD
oSIST prEN ISO 18526-3:2018
01-julij-2018
9DURYDQMHRþLLQREUD]D3UHVNXVQHPHWRGHGHO)L]LNDOQHLQPHKDQVNH
ODVWQRVWL ,62',6

Eye and face protection - Test methods - Part 3: Physical and mechanical properties

(ISO/DIS 18526-3:2018)

Augen- und Gesichtsschutz - Prüfverfahren - Teil 3: Physikalische und mechanische

Eigenschaften (ISO/DIS 18526-3:2018)

Protection des yeux et du visage - Méthodes d'essai - Partie 3: Propriétés mécaniques

(ISO/DIS 18526-3:2018)
Ta slovenski standard je istoveten z: prEN ISO 18526-3
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
oSIST prEN ISO 18526-3:2018 en

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 18526-3:2018
---------------------- Page: 2 ----------------------
oSIST prEN ISO 18526-3:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18526-3
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 3:
Physical and mechanical properties
Protection des yeux et du visage — Méthodes d'essai —
Partie 3: Propriétés mécaniques
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 18526-3:2018(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
---------------------- Page: 3 ----------------------
oSIST prEN ISO 18526-3:2018
ISO/DIS 18526-3:2018(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: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 18526-3:2018
ISO/DIS 18526-3:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................vi

Introduction ..............................................................................................................................................................................................................................vii

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

2 Normative References ..................................................................................................................................................................................... 1

3 Terms and Definitions .................................................................................................................................................................................... 1

4 Preparatory information ............................................................................................................................................................................. 2

5 General test requirements ......................................................................................................................................................................... 2

6 Physical test methods ...................................................................................................................................................................................... 2

6.1 Physical inspection ............................................................................................................................................................................. 2

6.1.1 Principle ................................................................................................................................................................................. 2

6.1.2 Procedure.............................................................................................................................................................................. 2

6.1.3 Test report ............................................................................................................................................................................ 2

6.2 Field of view .............................................................................................................................................................................................. 3

6.2.1 Principle .................................................................................................................................................................................. 3

6.2.2 Apparatus ............................................................................................................................................................................... 3

6.2.3 Procedure ............................................................................................................................................................................... 3

6.2.4 Test report ............................................................................................................................................................................. 3

6.3 Area to be protected - assessment from the frontal direction ....................................................................... 4

6.3.1 Principle .................................................................................................................................................................................. 4

6.3.2 Apparatus ............................................................................................................................................................................... 4

6.3.3 Procedure ............................................................................................................................................................................... 4

6.3.4 Test report ............................................................................................................................................................................. 4

6.4 Area to be protected - assessment from the lateral direction ........................................................................ 4

6.4.1 Principle .................................................................................................................................................................................. 4

6.4.2 Apparatus ............................................................................................................................................................................... 4

6.4.3 Procedure ............................................................................................................................................................................... 4

6.4.4 Test report ............................................................................................................................................................................. 5

6.5 Retention by headbands and harnesses (Sit and Fit) ............................................................................................ 5

6.5.1 Principle .................................................................................................................................................................................. 5

6.5.2 Procedure ............................................................................................................................................................................... 5

6.5.3 Test report ............................................................................................................................................................................. 5

6.6 Visual assessment of material and surface quality of lenses .......................................................................... 5

6.6.1 Principle .................................................................................................................................................................................. 5

6.6.2 Apparatus ............................................................................................................................................................................... 5

6.6.3 Procedure ............................................................................................................................................................................... 6

6.6.4 Test report ............................................................................................................................................................................. 6

6.7 Resistance to thermal exposure ............................................................................................................................................... 6

6.7.1 Principle .................................................................................................................................................................................. 6

6.7.2 Procedure ............................................................................................................................................................................... 7

6.7.3 Test report ............................................................................................................................................................................. 7

6.8 Resistance to ultraviolet radiation ......................................................................................................................................... 7

6.8.1 Principle .................................................................................................................................................................................. 7

6.8.2 Solar ultraviolet radiation ........................................................................................................................................ 7

6.8.3 Ultraviolet radiation from artificial sources............................................................................................. 9

6.9 Resistance to corrosion ................................................................................................................................................................... 9

6.9.1 Principle .................................................................................................................................................................................. 9

6.9.2 Reagents and materials .............................................................................................................................................. 9

6.9.3 Procedure ............................................................................................................................................................................10

6.9.4 Test report ..........................................................................................................................................................................10

6.10 Resistance to ignition .....................................................................................................................................................................10

6.10.1 Principle ...............................................................................................................................................................................10

6.10.2 Apparatus ............................................................................................................................................................................10

© ISO 2018 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 18526-3:2018
ISO/DIS 18526-3:2018(E)

6.10.3 Procedure ............................................................................................................................................................................10

6.10.4 Test report ..........................................................................................................................................................................11

6.11 Resistance to fogging of lenses or filters .......................................................................................................................11

6.11.1 Principle ...............................................................................................................................................................................11

6.11.2 Apparatus ............................................................................................................................................................................11

6.11.3 Conditioning .....................................................................................................................................................................12

6.11.4 Procedure ............................................................................................................................................................................12

6.11.5 Test report ..........................................................................................................................................................................13

6.12 Protection against droplets .......................................................................................................................................................13

6.12.1 Principle ...............................................................................................................................................................................13

6.12.2 Reagents, material and apparatus .................................................................................................................13

6.12.3 Procedure ............................................................................................................................................................................13

6.12.4 Test report ..........................................................................................................................................................................14

6.13 Protection against streams of liquids ...............................................................................................................................14

6.13.1 Principle ...............................................................................................................................................................................14

6.13.2 Reagents, materials and apparatus ...............................................................................................................14

6.13.3 Procedure ............................................................................................................................................................................15

6.14 Protection against large dust particles............................................................................................................................16

6.14.1 Test principle ...................................................................................................................................................................16

6.14.2 Material and apparatus ...........................................................................................................................................16

6.14.3 Procedure ............................................................................................................................................................................17

6.14.4 Test report ..........................................................................................................................................................................18

6.15 Protection against gases and fine dust ............................................................................................................................18

6.15.1 Principle ...............................................................................................................................................................................18

6.15.2 Apparatus ............................................................................................................................................................................18

6.15.3 Procedure ............................................................................................................................................................................18

6.15.4 Test report ..........................................................................................................................................................................19

6.16 Protection against radiant heat .............................................................................................................................................19

6.16.1 Principle ...............................................................................................................................................................................19

6.16.2 Test apparatus .................................................................................................................................................................19

6.16.3 Preparation of the test sample ..........................................................................................................................20

6.16.4 Procedure ............................................................................................................................................................................20

6.16.5 Test report ..........................................................................................................................................................................21

6.17 Chemical resistance .........................................................................................................................................................................21

6.17.1 Principle ...............................................................................................................................................................................21

6.17.2 Procedure ............................................................................................................................................................................21

6.17.3 Test report ..........................................................................................................................................................................21

7 Mechanical test methods ..........................................................................................................................................................................21

7.1 Robustness ..............................................................................................................................................................................................21

7.1.1 General...................................................................................................................................................................................21

7.1.2 Minimum robustness of unmounted lenses ..........................................................................................22

7.1.3 Drop ball test for unmounted lenses ...........................................................................................................24

7.1.4 Drop ball test for complete protectors .......................................................................................................26

7.2 Ballistic impact test for complete protectors .............................................................................................................27

7.2.1 Normal ambient temperatures .........................................................................................................................27

7.2.2 Extremes of temperature .......................................................................................................................................28

7.3 High Mass Test for complete protectors ........................................................................................................................28

7.3.1 Normal ambient temperatures .........................................................................................................................28

7.3.2 Extremes of temperature .......................................................................................................................................29

7.4 Resistance to surface damage due to flying fine particles ..............................................................................30

7.4.1 Principle ...............................................................................................................................................................................30

7.4.2 Material and apparatus ...........................................................................................................................................30

7.4.3 Preparation of reference samples for measurement of light scatter ...............................32

7.4.4 Preparation of test samples .................................................................................................................................33

7.4.5 Procedure ............................................................................................................................................................................33

7.4.6 Evaluation of narrow angle scatter of the test sample .................................................................33

7.4.7 Evaluation of wide angle scatter of the test sample .......................................................................34

7.4.8 Test report ..........................................................................................................................................................................34

iv © ISO 2018 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 18526-3:2018
ISO/DIS 18526-3:2018(E)

7.5 Penetration of vents.........................................................................................................................................................................34

7.5.1 Principle ...............................................................................................................................................................................34

7.5.2 Apparatus ............................................................................................................................................................................34

7.5.3 Procedure ............................................................................................................................................................................35

7.5.4 Test report ..........................................................................................................................................................................35

7.6 Protection against molten metals and hot solids ...................................................................................................35

7.6.1 Adherence of molten metal ..................................................................................................................................35

7.6.2 Resistance to penetration of protector by hot solid .......................................................................37

8 Marking and Packaging ..............................................................................................................................................................................38

8.1 Principle .....................................................................................................................................................................................................38

8.2 Procedure .................................................................................................................................................................................................38

8.3 Test report ................................................................................................................................................................................................38

9 Information to be supplied by the manufacturer ............................................................................................................39

9.1 Principle .....................................................................................................................................................................................................39

9.2 Procedure .................................................................................................................................................................................................39

9.3 Test report ................................................................................................................................................................................................39

10 Additional test methods for protectors during welding and related techniques ..........................39

10.1 Welding filters.......................................................................................................................................................................................39

10.1.1 Dimensions ........................................................................................................................................................................39

10.2 Drop test of welding protectors ............................................................................................................................................39

10.2.1 Principle ...............................................................................................................................................................................39

10.2.2 Apparatus ............................................................................................................................................................................39

10.2.3 Preparation of test samples .................................................................................................................................40

10.2.4 Procedure ............................................................................................................................................................................40

10.2.5 Test report ..........................................................................................................................................................................40

10.3 Light tightness of welding protectors ..............................................................................................................................40

10.3.1 Principle ...............................................................................................................................................................................40

10.3.2 Procedure ............................................................................................................................................................................40

10.3.3 Test report ..........................................................................................................................................................................40

10.4 Electrical insulation of welding helmets and welding hand shields ......................................................40

10.4.1 Principle ...............................................................................................................................................................................40

10.4.2 Procedure ............................................................................................................................................................................41

10.4.3 Test report ..........................................................................................................................................................................41

11 Additional test methods for mesh protectors .....................................................................................................................41

11.1 Number of apertures
...

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