# ISO 23369:2021 — Withdrawn and superseded ISO standards

For ISO 23369:2021, item title is Hydraulic fluid power — Multi-pass method of evaluating filtration performance of a filter element under cyclic flow conditions; status code is 9599; successor is ISO 23369:2022; withdrawn / published date is 2021-06-16, recorded from its source on 2026-08-05.

- **Identifier:** ISO 23369:2021 _(verified: appears in the quote below)_
- **Item title:** Hydraulic fluid power — Multi-pass method of evaluating filtration performance of a filter element under cyclic flow conditions _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 23369:2022
- **Withdrawn / published date:** 2021-06-16 _(verified: appears in the quote below)_

## What the source says

> 68546,IS,,ISO 23369:2021,Hydraulic fluid power — Multi-pass method of evaluating filtration performance of a filter element under cyclic flow conditions,Transmissions hydrauliques — Évaluation des performances d’un élément filtrant par la méthode de filtration multi-passe sous débit cyclique,2021-06-16,1,['23.100.60'],ISO/TC 131/SC 6,9599,,[84020],"['en','fr']",34,"<p>This document specifies:</p><p>a) A multi-pass filtration performance test under cyclic flow conditions with continuous contaminant injection for hydraulic fluid power filter elements.</p><p>b) A procedure for determining the contaminant capacity, particulate removal and differential pressure characteristics.</p><p>c) A test cu

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).