Effect of ammonia vapor on photographic materials

The following is posted on behalf or Michal Durovic

    Do you know something about negative influence of the ammonia
    vapor (concentration: approximately. 10 mg ammonia per 1 m3 of
    air) to the black-white positive and negative photographic
    materials during long exposure?

    Michal Durovic, PhD.
    State Central Archives in Prague
    Karmelitska 2
    118 01 Prague 1
    Czech Republic
    Fax: +42 2 57320275

Ivan Vanecek, PhD.
Vysoka skola chemicko technologicka, Praha
Ustav chemicke technologie restaurovani pamatek
Technicka 5
166 28  Praha

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                  Conservation DistList Instance 12:76
                  Distributed: Friday, March 26, 1999
                       Message Id: cdl-12-76-016
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