# ISO 3596-1:1988/Amd 1:1997 — Withdrawn and superseded ISO standards For ISO 3596-1:1988/Amd 1:1997, item title is Animal and vegetable fats and oils — Determination of unsaponifiable matter — Part 1: Method using diethyl ether extraction (Reference method) — Amendment 1: Results of interlaboratory tests; status code is 9599; successor is ISO 3596:2000; withdrawn / published date is 1997-11-27, recorded from its source on 2026-08-05. - **Identifier:** ISO 3596-1:1988/Amd 1:1997 _(verified: appears in the quote below)_ - **Item title:** Animal and vegetable fats and oils — Determination of unsaponifiable matter — Part 1: Method using diethyl ether extraction (Reference method) — Amendment 1: Results of interlaboratory tests _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 3596:2000 - **Withdrawn / published date:** 1997-11-27 _(verified: appears in the quote below)_ ## What the source says > 27491,IS,Amd,ISO 3596-1:1988/Amd 1:1997,Animal and vegetable fats and oils — Determination of unsaponifiable matter — Part 1: Method using diethyl ether extraction (Reference method) — Amendment 1: Results of interlaboratory tests,Corps gras d'origines animale et végétale — Détermination de la teneur en matières insaponifiables — Partie 1: Méthode par extraction à l'oxyde diéthylique (méthode de référence) — Amendement 1: Résultats des essais interlaboratoires,1997-11-27,1,['67.200.10'],ISO/TC 34/SC 11,9599,,[33514],"['en','fr']",2, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).