# ISO 4407:1991 — Withdrawn and superseded ISO standards

For ISO 4407:1991, item title is Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the counting method using a microscope; status code is 9599; successor is ISO 4407:2002; withdrawn / published date is 1991-06-06, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4407:1991 _(verified: appears in the quote below)_
- **Item title:** Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the counting method using a microscope _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4407:2002
- **Withdrawn / published date:** 1991-06-06 _(verified: appears in the quote below)_

## What the source says

> 10312,IS,,ISO 4407:1991,Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the counting method using a microscope,Transmissions hydrauliques — Pollution des fluides — Détermination de la pollution particulaire solide — Méthode de comptage au microscope,1991-06-06,1,['23.100.60'],ISO/TC 131/SC 6,9599,,[28058],"['en','fr']",6,

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).