ISO 4407:2002

Hydraulic fluid power -- Fluid contamination -- Determination of particulate contamination by the counting method using an optical microscope

General information
Valid from 02.05.2002
Directives or regulations
Standard history
This International Standard specifies methods for determining the level of particulate contamination in liquids used in hydraulic systems by counting the number of particles deposited on the surface of a membrane filter using an optical microscope. It includes particle counting by two manual methods and image analysis, using either transmitted or incident lighting systems. Particle sizes greater than or equal to 2 micrometres can be sized and counted by this method, but the resolution and accuracy of the results will depend upon the optical system used and the capabilities of the operator. All hydraulic fluids with a wide range of contamination levels can be analysed according to this International Standard. However, the counting uncertainty at the larger particle sizes increases if the volume filtered is reduced to allow smaller sized particles to be counted, where a fine precipitate or a high particle concentration is present.
97.78 € incl tax
97.78 € incl tax
Standard monitoring
Customers who bought this item also bought

EVS-EN ISO 4413:2010

Hydraulic fluid power - General rules and safety requirements for systems and their components (ISO 4413:2010)
Newest version Valid from 05.01.2011
Main + corrigendum

EVS-EN 856:2015

Rubber hoses and hose assemblies - Rubber-covered spiral wire reinforced hydraulic type - Specification (Corrected version 03.2019)
Newest version Valid from 07.05.2015

ISO 1219-1:2012/Amd 1:2016

ISO 1219-1:2012 - Amendment
Newest version Valid from 15.04.2016

EVS-EN 4406:2006

Aerospace series - Paints and varnishes - Two component cold curing polyurethane coating - Abrasion resistant
Newest version Valid from 08.12.2006