This International Standard describes test methods for determining the long-term dark storage stability of colour photographic images. It is applicable to colour photographic images made with traditional photographic materials. These images are generated with chromogenic, silver dye-bleach, dye transfer, dye-diffusion-transfer “instant” systems and similar systems. The test method specified in this International Standard also covers the dark-stability of digital colour images produced with dry- and liquid-toner electrophotography, thermal dye transfer (sometimes called “dye sublimation”), and inkjet printing systems.