ISO 4407:2002
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the counting method using an optical microscope
Hardcopy , PDF
English, French
02-05-2002
06-01-2026
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.
| Committee |
ISO/TC 131/SC 6
|
| DevelopmentNote |
Supersedes ISO/DIS 4407 (05/2002)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| NBN E 48 012 : 1987 | Identical |
| BS ISO 4407:2002 | Identical |
| GOST ISO 4407 : 2006 | Identical |
| NEN ISO 4407 : 2002 | Identical |
| NF ISO 4407 : 2002 | Identical |
| SS-ISO 4407:2002 | Identical |
| JIS B 9930:2006 | Identical |
| NFE 48 651 : 1986 | Similar to |
| BS 5540-8:1991 | Identical |
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