Digital BW, The Print

Hello Clayton, Alan,

here you can find a preservation calculator:
http://www.rit.edu/~661www1/sub_pages/8page20.htm

Although it is to be used for developed films and papers, you can get
an idea on how temperature and humidity effect the longevity of
photographic materials in general.

greetings,

Casper Cammeraat
teammanager dept. of Optical Technology
National Library of the Netherlands
casper.cammeraat@...