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Infectious development SWPP Photographic Glossary

Tuesday 16th August 2022  




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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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18/07/2022 16:38:36