ISO 16900-11:2025
(Main)Respiratory protective devices — Methods of test and test equipment — Part 11: Determination of field of vision
Respiratory protective devices — Methods of test and test equipment — Part 11: Determination of field of vision
This document specifies the laboratory test method for determining the field of vision for a respiratory protective device (RPD).
Appareils de protection respiratoire — Méthodes d'essai et équipement d'essai — Partie 11: Détermination du champ de vision
L'ISO 16900-11:2013 spécifie la méthode d'essai de laboratoire qui permet de déterminer le champ de vision d'un appareil de protection respiratoire (APR).
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Standards Content (Sample)
International
Standard
ISO 16900-11
Second edition
Respiratory protective devices —
2025-01
Methods of test and test
equipment —
Part 11:
Determination of field of vision
Appareils de protection respiratoire — Méthodes d'essai et
équipement d'essai —
Partie 11: Détermination du champ de vision
Reference number
© ISO 2025
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Prerequisites . 2
5 General test requirements . 2
6 Principle . 2
7 Equipment . 2
8 Procedure . 2
8.1 Sample preparation .2
8.2 Apertometer setup .3
8.3 Mounting the RPD .3
8.4 Mapping the field of vision .3
8.5 Calculating the visual field score (VFS) .4
9 Test report . 6
Annex A (normative) RPD headforms for determining the field of vision . 7
iii
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
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has been established has the right to be represented on that committee. International organizations,
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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 document 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).
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This document was prepared by Technical Committee ISO/TC 94, Personal safety — Personal protective
equipment, Subcommittee SC 15, Respiratory protective devices.
This second edition cancels and replaces the first edition (ISO 16900-11:2013), which has been technically
revised.
The main changes are as follows:
— equipment for RPD headforms specified to use illuminated eyes;
— mounting the RPD in 8.3 more specified;
— Figure 1 changed to use headforms according to ISO 16900-5;
— in Table 1 the total visual field score (VFS) and the number of critical dots were added;
— application of uncertainty of measurement former Annex A was deleted;
— figures revised where appropriate.
A list of all parts in the ISO 16900 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
Introduction
This document is intended as a supplement to the respiratory protective devices (RPD) performance
standards. Test methods are specified for complete devices or parts of devices. If deviations from the
test method given in this document are necessary, these deviations will be specified in the performance
standards.
v
International Standard ISO 16900-11:2025(en)
Respiratory protective devices — Methods of test and test
equipment —
Part 11:
Determination of field of vision
1 Scope
This document specifies the laboratory test method for determining the field of vision for a respiratory
protective device (RPD).
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 16972, Respiratory protective devices — Vocabulary and graphical symbols
ISO 16900-5:2016/Amd 1:2018, Respiratory protective devices — Methods of test and test equipment — Part 5:
Breathing machine, metabolic simulator, RPD headforms and torso, tools and verification tools — Amendment 1:
RPD headforms front and side view
ISO 17420-3, Respiratory protective devices — Performance requirements — Part 3: Thread connection
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 16972 and the following apply.
ISO and IEC maintain terminology databases for use in standardisation at the following addresses:
— ISO Online browsing platform: available at htt
...
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