I recently began experimenting with Van Dyke printing, using the "recipe" on the ToolKit page, and have been fairly pleased with the results. Does anyone know how many times I can use the sodium thiosulfate fixer before discarding it? Because I generally only use it once, it seems as though my supply is being rapidly depleted.

Thanks in advance.

-- Wes Sechler (wes_sechler@muccmail.missouri.edu), March 02, 1998