# ISO 6141:1979 — Withdrawn and superseded ISO standards For ISO 6141:1979, item title is Gas analysis — Calibration gas mixtures — Certificate of mixture preparation; status code is 9599; successor is ISO 6141:1984; withdrawn / published date is 1979-04-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 6141:1979 _(verified: appears in the quote below)_ - **Item title:** Gas analysis — Calibration gas mixtures — Certificate of mixture preparation _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6141:1984 - **Withdrawn / published date:** 1979-04-01 _(verified: appears in the quote below)_ ## What the source says > 12370,IS,,ISO 6141:1979,Gas analysis — Calibration gas mixtures — Certificate of mixture preparation,Analyse des gaz — Mélanges de gaz pour étalonnage — Certificat de préparation du mélange,1979-04-01,1,['71.040.40'],ISO/TC 158,9599,,[12371],"['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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).