Storage of colored materials.
Storage of undeveloped color photosensitive materials should be done under the same conditions as storage of color photos. Beware of too high temperatures and too much humidity. As you know, silver bromide emulsions obtain their high photosensitivity as a result of emulsion maturation at a temperature of approx. 40°C at the time of production. Maturation is in the case of highly sensitive emulsions, of which the colored material consists, is extended until now, when its further conduction will cause an increase in smoke. In most cases it is approx. 1 time. However, stabilizers are added to emulsions for better stability, storing such materials at higher temperatures leads to their further maturation, and this in turn causes them to age, i.e. causes an increase in opacity. With color films, this leads to a lack of color balance and the three emulsions behave differently in this regard. It is not only the increased temperature that has a negative effect, but its harmful effects are much stronger, if the emulsion additionally absorbs moisture from the environment.
In a temperate climate, np. in northern Europe, no special storage conditions are required at all. Colored photosensitive materials endure the increased temperature in these conditions in summer and higher air humidity during rainy periods without major negative consequences. No user will specifically expose to the sun or remove photosensitive material from a well-sealed tin box, to keep it outdoors. However, there are certain doubts in cases, when storing partially exposed material, so with the latent image contained in it, or material from previous holidays We may then have concerns, whether the exposed photos from the previous and present period will have the same color character. However, such saving should not be advised to anyone, however, practically with regard to commercially available materials, it can be stated, that there is no visible deterioration when stored normally in the camera.