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Term - Infectious development


Infectious development SWPP Photographic Glossary

Thursday 27th February 2020  




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Infectious development

The development action which occurs in processing "lith" materials. The oxidation of hydroquinone produces new and highly active reducing agents, semiquinones, in the presence of a low quantity of sodium sulfite. This results in a very high contrast image.



 

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06/11/2019 11:36:07