ISO 18949:2019

Imaging materials — Reflection colour photographic prints — Method for testing stability under low humidity conditions ISO 18949:2019

Publication date:   Jul 19, 2019

General information

90.93 Standard confirmed   Jun 17, 2024


ISO/TC 42 Photography

International Standard

37.040.20   Photographic paper, films and plates. Cartridges



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This document describes test methods to evaluate reflection colour photographic prints with regard to changes in image appearance resulting from exposure to low relative humidity.
The observed changes relate primarily to substrate yellowing. Other observed humidity related physical damage factors such as curl, cockle, cracking, or delamination due to humidity cycling are also within the scope of this test method.

Life cycle


ISO 18949:2019
90.93 Standard confirmed
Jun 17, 2024