The LE (Life Expectancy) of Diazo films is defined in ISO 18905 (formerly
ISO 8225) Photography ? Ammonia-processed diazo photographic film ?
Specifications for stability. LE of 100 years is typical for these
films when stored properly. Please refer to the standard for the exact
specifications, as I do not have a copy of the latest version on this
standard. Storage conditions which will provide for long term (100 years
or more) are listed in ISO 18911 Photography ? Processed safety
photographic films ? Storage practices 18911. These standards can be
purchased from AIIM (www.aiim.org) or ANSI www.ansi.org.
Regards,
Bob Breslawski
585.477.6771 t
585.781.4551 m
585-722-6880 f
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