ISO 18920:2011 specifies dark storage conditions, storage facilities and procedures for the handling and inspection of reflection prints of all types and sizes. ISO 18920:2011 is applicable to: · prints on opaque supports, · processed black-and-white silver gelatine prints, · processed multicolour and monochrome colour photographic prints, · black-and-white and colour prints. ISO 18920:2011 is applicable to medium-term and extended-term storage conditions