# ISO 23539:2005 — Withdrawn and superseded ISO standards

For ISO 23539:2005, item title is Photometry — The CIE system of physical photometry; status code is 9599; successor is ISO/CIE 23539:2023; withdrawn / published date is 2005-07-26, recorded from its source on 2026-08-05.

- **Identifier:** ISO 23539:2005 _(verified: appears in the quote below)_
- **Item title:** Photometry — The CIE system of physical photometry _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/CIE 23539:2023
- **Withdrawn / published date:** 2005-07-26 _(verified: appears in the quote below)_

## What the source says

> 41641,IS,,ISO 23539:2005,Photometry — The CIE system of physical photometry,Photométrie — Le système CIE de photométrie physique,2005-07-26,1,['17.180.01'],CIE,9599,,[83178],"['en','fr']",18,"<p>ISO 23539:2005 specifies the characteristics of the system of physical photometry established by the CIE and accepted as the basis for the measurement of light. It defines the photometric quantities, units and standards that make up the CIE system of physical photometry and that have been officially accepted by the Comité International des Poids et Mesures (CIPM).</p>"

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).