# ISO 19438:2003 — Withdrawn and superseded ISO standards For ISO 19438:2003, item title is Diesel fuel and petrol filters for internal combustion engines — Filtration efficiency using particle counting and contaminant retention capacity; status code is 9599; successor is ISO 19438:2023; withdrawn / published date is 2003-11-04, recorded from its source on 2026-08-05. - **Identifier:** ISO 19438:2003 _(verified: appears in the quote below)_ - **Item title:** Diesel fuel and petrol filters for internal combustion engines — Filtration efficiency using particle counting and contaminant retention capacity _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 19438:2023 - **Withdrawn / published date:** 2003-11-04 _(verified: appears in the quote below)_ ## What the source says > 33831,IS,,ISO 19438:2003,Diesel fuel and petrol filters for internal combustion engines — Filtration efficiency using particle counting and contaminant retention capacity,"Filtres à carburant, essence ou diesel, pour moteurs à combustion interne — Efficacité de filtration par comptage des particules et capacité de rétention",2003-11-04,1,['43.060.40'],ISO/TC 22/SC 34,9599,[35892],[82268],['en'],38,"

ISO 19438:2003 specifies a multi-pass filtration test, with continuous contaminant injection and using the on-line particle counting method, for evaluating the performance of fuel filters for internal combustion engines submitted to a constant flow rate of test liquid. The test procedure determ ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).