Calotype Chemical Shelf Life

Discussion in 'Alternative Processes' started by vintagepics, Oct 5, 2010.

  1. vintagepics

    vintagepics Member

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    What would be the shelf life of chemicals for this process once mixed. For example, I mix 1 L of Hypo, and only use 200 ml. Is the 200 ml reusable, and what is the shelf life of the unused portion? I always have leftover Iodide solution, or Silver Nitrate solution. Can any of this be reused? Thanks