# ISO 12744:1997 — Withdrawn and superseded ISO standards For ISO 12744:1997, item title is Copper, lead and zinc sulfide concentrates — Experimental methods for checking the precision of sampling; status code is 9599; successor is ISO 12744:2006; withdrawn / published date is 1997-05-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 12744:1997 _(verified: appears in the quote below)_ - **Item title:** Copper, lead and zinc sulfide concentrates — Experimental methods for checking the precision of sampling _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 12744:2006 - **Withdrawn / published date:** 1997-05-01 _(verified: appears in the quote below)_ ## What the source says > 22318,IS,,ISO 12744:1997,"Copper, lead and zinc sulfide concentrates — Experimental methods for checking the precision of sampling","Concentrés sulfurés de cuivre, de plomb et de zinc — Méthodes expérimentales de contrôle de la fidélité de l'échantillonnage",1997-05-01,1,['73.060.99'],ISO/TC 183,9599,,[41317],['en'],12, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).