# ISO 18946:2011 — Withdrawn and superseded ISO standards

For ISO 18946:2011, item title is Imaging materials — Reflection colour photographic prints — Method for testing humidity fastness; status code is 9599; successor is ISO 18946:2023; withdrawn / published date is 2011-12-06, recorded from its source on 2026-08-05.

- **Identifier:** ISO 18946:2011 _(verified: appears in the quote below)_
- **Item title:** Imaging materials — Reflection colour photographic prints — Method for testing humidity fastness _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 18946:2023
- **Withdrawn / published date:** 2011-12-06 _(verified: appears in the quote below)_

## What the source says

> 31972,IS,,ISO 18946:2011,Imaging materials — Reflection colour photographic prints — Method for testing humidity fastness,Matériaux pour l'image — Tirages photographiques en couleurs par réflexion — Méthode d'essai de la solidité à l'humidité,2011-12-06,1,['37.040.20'],ISO/TC 42,9599,,[83566],['en'],13,"<p>ISO 18946:2012 describes test methods for evaluating reflection colour photographic prints with regard to changes in image appearance resulting from exposure to both low and high relative humidity.</p><p>The observed changes relate to colour, tone and loss of sharpness caused by horizontal and vertical diffusion of colorants from exposure to elevated humidity levels. Other humidity-related

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).