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   » » Wiki: Caffenol
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Caffenol is a photographic alternative process whereby , and optionally are used in as a film and print photographic developer. Film Photography Project: Coffee Break – Develop Film at Home with Caffenol , Film Photography Project.

Other basic (as opposed to ) chemicals can be used in place of sodium carbonate; however, sodium carbonate is the most common.

There are many formulas for caffenol, all based on preparations that contain (i.e., or ) and a pH modifier, most often sodium carbonate. The chemistry of caffenol developers is based on the action of the caffeic acid, which is chemically unrelated to caffeine.


History
The 1995 technical photographic chemistry class at Rochester Institute of Technology, led by Scott Williams, developed a method of developing photographic film using standard household items. They tested mixtures of tea and coffee combined with agents to balance the pH and successfully made printable images for exposed film.

Since then, the process has successfully been adapted for beer, red wine, and infusions with -rich foods, such as , , and seed pods.


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