# ISO 6271-1:2004 — Withdrawn and superseded ISO standards For ISO 6271-1:2004, item title is Clear liquids — Estimation of colour by the platinum-cobalt scale — Part 1: Visual method; status code is 9599; successor is ISO 6271:2015; withdrawn / published date is 2004-11-23, recorded from its source on 2026-08-05. - **Identifier:** ISO 6271-1:2004 _(verified: appears in the quote below)_ - **Item title:** Clear liquids — Estimation of colour by the platinum-cobalt scale — Part 1: Visual method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6271:2015 - **Withdrawn / published date:** 2004-11-23 _(verified: appears in the quote below)_ ## What the source says > 34150,IS,,ISO 6271-1:2004,Clear liquids — Estimation of colour by the platinum-cobalt scale — Part 1: Visual method,Liquides clairs — Évaluation de la couleur au moyen de l'échelle platine-cobalt — Partie 1: Méthode visuelle,2004-11-23,1,['87.060.20'],ISO/TC 35,9599,[12554],[63300],"['en','fr','ru']",4,"

ISO 6271-1:2004 specifies a method for estimating the colour, in Pt-Co units, of clear liquids.

It is applicable to clear liquids having colour characteristics similar to those of the reference platinum-cobalt scale.

" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).