BS ISO BRITISH STANDARD 4407:2002 Hydraulic fluid power Fluid contamination : Determination of particulate contamination by the counting method using an optical microscope ICS 23.100.60 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS IS0 4407:2002 National foreword This British Standard reproduces verbatim IS0 4407:2002 and implements it as the UK national standard. It supersedes BS 5540-8:1991 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee MCE/18, Fluid power systems and components, to Subcommittee MCE/18/-/6, Contamination control, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; Jan 2023. monitor related international and European developments and promulgate them in the UK. 14 A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references 8 . Version correct The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index", or by using the “Find" facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of f Southampton.) a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. 0. University This British Standard, having Summary of pages beenpreparedunderthe direction of the Engineering This document comprises a front cover, an inside front cover, the ISO title page, Sector Policy and Strategy pages ii to v, a blank page, pages 1 to 14, an inside back cover and a back cover. Committee, was published The BSI copyright date displayed in this document indicates when the under the authority of the Standards Policy and Strategy document was last issued. Committee on 21 May 2002 Amendments issued since publication Amd. No. Date Comments BSI 21 May 2002 ISBN 0 580 39724 6 ISO INTERNATIONAL STANDARD 4407 Second edition 2002-04-15 2023 of14Jan Hydraulic fluid power Fluid contamination Determination of particulate contamination by the counting as method using an optical microscope correct Transmissions hydrauliques Pollution des fluides Détermination de la Version pollution particulaire par comptage au microscope optique Licensed copy: University of Southampton. Reference number ISO 4407:2002(E) ISO