# ISO 4572:1981 — Withdrawn and superseded ISO standards For ISO 4572:1981, item title is Hydraulic fluid power — Filters — Multi-pass method for evaluating filtration performance; status code is 9599; successor is ISO 16889:1999; withdrawn / published date is 1981-04-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4572:1981 _(verified: appears in the quote below)_ - **Item title:** Hydraulic fluid power — Filters — Multi-pass method for evaluating filtration performance _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 16889:1999 - **Withdrawn / published date:** 1981-04-01 _(verified: appears in the quote below)_ ## What the source says > 10494,IS,,ISO 4572:1981,Hydraulic fluid power — Filters — Multi-pass method for evaluating filtration performance,Transmissions hydrauliques — Filtres — Évaluation du rendement par la méthode de filtration en circuit fermé,1981-04-01,1,['23.100.60'],ISO/TC 131/SC 6,9599,,[10495],"['en','fr']",28, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).