ISO 11218:2017

INTERNATIONAL ISO
STANDARD 11218
Second edition
2017-02
Aerospace — Cleanliness classification
for hydraulic fluids
Aéronautique et espace — Classes de propreté des fluides
hydrauliques
Reference number
ISO 11218:2017(E)
©
ISO 2017

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ISO 11218:2017(E)

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ii © ISO 2017 – All rights reserved

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ISO 11218:2017(E)

Contents  Page
Foreword .iv
1 Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  Requirements . 1
5  Identification statement (reference to this document) . 1
6 Revision of AS4059F . 2
© ISO 2017 – All rights reserved iii

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ISO 11218:2017(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, Pa
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