ISO 9022-12:2015

INTERNATIONAL ISO
STANDARD 9022
Redline version
compares Second edition to
First edition
Optics and photonics —
Environmental test methods —
Part 12:
Contamination
Optique et photonique — Méthodes d’essais d’environnement —
Partie 12: Contamination
Reference number
ISO 9022:redline:2015(E)
©
ISO 2015

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ISO 9022:redline:2015(E)

IMPORTANT — PLEASE NOTE
This is a mark-up copy and uses the following colour coding:
Text example 1 — indicates added text (in green)
Text example 2 — indicates removed text (in red)
— indicates added graphic figure
— indicates removed graphic figure
1.x . — Heading numbers containg modifications are highlighted in yellow in
the Table of Contents
DISCLAIMER
This Redline version provides you with a quick and easy way to compare the main changes
between this edition of the standard and its previous edition. It doesn’t capture all single
changes such as punctuation but highlights the modifications providing customers with
the most valuable information. Therefore it is important to note that this Redline version is
not the official ISO standard and that the users must consult with the clean version of the
standard, which is the official standard, for implementation purposes.
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© ISO 2015
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ISO 9022:redline:2015(E)

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative reference references . 1
3 General information and test conditions . 1
3.1 Specimen . 1
3.2 Test pad . 2
3.3 Test weight and arrangement of test pads . 3
4 Conditioning . 4
4.1 General . 4
4.1 4.2 Conditioning method 86: Basic cosmetic substances and artificial hand sweat . 5
4.2 4.3 Conditioning method 87: Laboratory agents . 5
4.3 4.4 Conditioning method 88: Production plant resources . 5
4.4 4.5 Conditioning method 89: Fuels and resources for aircraft, naval vessels, and
land vehicles . 5
5 Procedure.10
5.1 General .10
5.2 Preconditioning .10
5.3 Test sequence .11
5.4 Recovery .11
5.5 Evaluation .11
5.6 General level for acceptance .11
6 Environmental test code .12
7 Specification .12
Annex A (normative) Determination of pH value of aqueous extract of pad materials .14
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ISO 9022:redline:2015(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).
Draft International Standards adopted by the technical committees are circulated to the member bodies
for voting. Publication as an International Standard requires approval by at least 75 % of the member
bodies casting a voteAttention 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 WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
International StandardThe committee ISO 9022-12 was prepared by Technical Committeeresponsible
for this document is ISO/TC 172, Optics and optical instrumentsphotonics, Subcommittee SC 1,
Fundamental standards.
This second edition cancels and replaces the first edition (ISO 9022-12:1994), of which it constitutes a
minor revision.
ISO 9022 consists of the following parts, under the general title Optics and optical instrumentsphotonics —
Environmental test methods:
— Part 1: Definitions, extent of testing
— Part 2: Cold, heat, and humidity
— Part 3: Mechanical stress
— Part 4: Salt mist
— Part 5: Combined cold, low air pressure6: Dust
— Part 6: Dust
— Part 7: Drip,Resistance to drip or rain
— Part 8: High internal pressure, low internal pressure, immersion
— Part 9: Solar radiation and weathering
— Part 10: Combined sinusoidal vibration, dry heat or cold
— Part 11: Mould growth
— Part 12: Contamination
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ISO 9022:redline:2015(E)

— Part 13: Combined shock, bump or free fall, dry heat or cold
— Part 14: Dew, hoarfrost, ice
— Part 15: Combined random vibration wide band: reproducibility medium, in dry heat or cold
— Part 16: Combined bounce or steady-state acceleration, in dry heat or cold
— Part 17: Combined contamination, solar radiation
— Part 18: Combined damp heat and low internal pressure20: Humid atmosphere containing sulfur
dioxide or hydrogen sulfide
— Part 19: Temperature cycles combined with sinusoidal22: Combined cold, dry heat or temperature
change with bump or random vibration
— Part 20: Humid atmosphere containing sulfur dioxide or hydrogen sulfide23: Low pressure combined
with cold, ambient temperature and dry and damp heat
Annex A forms an integral part of this part of ISO 9022.
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ISO 9022:redline:2015(E)

Introduction
Optical instruments are affected during their use by a number of different environmental parameters
which they are required to resist without significant reduction in performance and to remain within
defined specifications.
The type and severity of these parameters depend on the conditions of use of the instrument (for example,
in the laboratory or workshop) and on its geographical location. The environmental effects on optical
instrument performance in the tropics and subtropics are totally different from those found when they
are used in the arctic regions. Individual parameters cause a variety of different and overlapping effects
on instrument performance.
The manufacturer attempts to ensure, and the user naturally expects, that instruments will resist the
likely rigours of their environment throughout their life. This expectation can be assessed by exposure
of the instrument to a range of simulated environmental parameters under controlled laboratory
conditions. The severity of these conditions is often increased to obtain meaningful results in a relatively
short period of time.
In order to allow assessment and comparison of the response of optical instruments to appropriate
environmental conditions, ISO 9022 contains details of a number of laboratory tests which reliably
simulate a variety of different environments. The tests are based largely on IEC standards, modified
where necessary to take into account features special to optical instruments.
It should be noted that, asAs a result of continuous progress in all fields, optical instruments are no
longer only precision-engineered optical products, but, depending on their range of application, also
contain additional assemblies from other fields. For this reason, the principal function of the instrument
mustis to be assessed to determine which International Standard should be used for testing. If the
optical function is of primary importance, then ISO 9022ISO 9022 is applicable, but if other functions
take precedence then the appropriate International Standard in the field concerned should be applied.
Cases maycan arise where application of both ISO 9022ISO 9022 and other appropriate International
Standards will be necessary.
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INTERNATIONAL STANDARD ISO 9022:redline:2015(E)
Optics and photonics — Environmental test methods —
Part 12:
Contamination
1 Scope
This part of ISO 9022 specifies methods for the testingthe methods relating to the environmental tests
of optical instruments and instruments containing optical componentsincluding additional assemblies
from other fields (e.g. mechanical, chemical, and electronic devices), under equivalent conditions, for
their ability to resist the influence of contamination, i.e. contact with corrosive chemical substances
1)
(hereafter called test agents).
However, complete instruments or assemblies are only tested as specified in this part of ISO 9022 in
exceptional cases (see 5.3). Normally, representative samples such as material items or surface coatings
on representative substrates are used for testing.
The tests described in this part of ISO 9022 are designed for the selection of materials and components for
instruments likely to suffer contamination during service life, rather than for regular production control.
The purpose of testing is to investigate the resistance of an instrument and, in particular, of instrument
surfaces, coatings, or synthetic materials, to a short exposure to the test agents.
2 Normative reference references
The following standard contains provisions which, through reference in this text, constitute provisions
of this part of documents, in whole or in part, are normatively referenced in this document and are
indispensable for its applicationISO 9022. At the time of publication, the edition indicated was valid. All
standards are subject to revision, and parties to agreements based on this part ofFor dated references,
only the edition cited applies. For undated references, ISO 9022 are encouraged to investigate the
possibility of applying the most recentthe latest edition of the standard indicated below. Members of IEC
and ISO maintain registers of currently valid International Standardsreferenced document (including
any amendments) applies.
2)
ISO 9022-1:1994  , Optics and optical instruments photonics — Environmental test methods — Part 1:
Definitions, extent of testing.
3 General information and test conditions
The test shall be conducted under ambient atmospheric conditions in accordance with ISO 9022-1.
The test agents listed from each conditioning method (Clause 4) represent different chemical groups.
3.1 Specimen
Unless the testing of complete instruments or assemblies is required in the relevant specification,
representative samples shall be used for testing. Representative materialssample sheets of at least
1) Another possible source of service contamination to which optical instruments can be exposed is radioactive
elements and isotopes, and hazardous chemical substances (e.g. 2:2-dichlorodiethysulfide). However, as these
materials may only be handled, used for testing, and stored by special, officially approved laboratories, they were
not used as test reagents.
2) To be published.
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ISO 9022:redline:2015(E)

1 mm thickness and having dimensions as shown in Figure 1 shall be used as substrates for the testing
of non-metallic coatings.
NOTE 1  Sample sheets of 140 mm ± 2 mm or 280 mm ± 2 mm in length maycan also be specified in the relevant
specification.
Dimensions in millimetres
Key
1 marking area (on the back)
a 210 ± 2 (280 ± 2)
b 95 ± 5 (140 ± 2)
Figure 1 — Sample sheet
Coatings to be tested shall be of the same structure as the coating intended for the instrument or for
parts of the instrument.
Prior to applying the coating, prepare the surface of the specimensample sheet in the same manner as
required for the original instrument. The coating shall completely surround the specimensample sheet
so as to cover, particularly, edges, corners, and edges of holes. The coating shall not be degraded by
identification marking; numbers, etc. shall be punched prior to applying the coating.
Particular care shall be taken to apply the coating in such a manner that the dry film will meet the
thickness required for the instrument with a tolerance of ± 5 μmµm. The specimens shall be protected
from contamination until commencement of the tests.
If specimenssample sheets as shown in Figure 1 are not available, as level a surface as possible of
representative instrument parts shall be used as test areas for testing synthetic materials. Where such
surfaces are not sufficient in size to support the test pad (3.2), the specimen shall be half immersed in
the test agent in order to permit testing under the required conditions.
3.2 Test pad
Felt pads having the following characteristics and drenched with test agent shall be used as test media:
colour: white
colour: white
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ISO 9022:redline:2015(E)

3 3
mass density: 0,25 g/cm to 0,30 g/cm
pH: 5 to 8 (for measurement, see Annex A)
thickness: 1 mm
diameter 9 mm
3 3
mass density: 0,25 g/cm to 0,30 g/cm
pH: 5 to 8 (for measurement, see annex A)
thickness: 1 mm
diameter: 9 mm
The felt pads shall be used only once.
Figure 1 — Sample sheet
3.3 Test weight and arrangement of test pads
For the duration of the test, the felt pad, drenched in test agent, shall be weighted by means of a high-
grade steel (e.g. X 5 CrNi 18 9 or X 5 CeNi 18 10) weight as shown in Figure 2.
Dimensions in millimetres
⌀20
⌀8
⌀1
Tolerances
3
Dimension Tolerance
0,5 to 6 ± 0,1
> 6 to 30 ± 0,2
2
± 0,3
> 30 to 120
1
⌀10
⌀13
Key
1 specimen
2 drenched felt pad
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0,9
4
3
20

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ISO 9022:redline:2015(E)

3 weight approx. 43 g
Figure 2 — Weight and test arrangement
Where corrosive agents (such as concentrated acids or acids developing corrosive vapour) capable of
attacking the weight are used for testing, the test pad shall be covered with a polytetrafluoroethylene
(PTFE) capsule as shown in Figure 3 before placing the weight on it.
Figure 2 — Weight and test arrangement
Figure 3 — Capsule
Normally, up to 21 test pads can be placed on a specimen with dimensions as shown in Figure 1,
...