Rajul,
there are different receipes. Eder had one with 25g ferric ammonium citrate (green) + 60 ccm water, 9g potassium ferricyanide + 60 ccm water and 0,5 g oxalic (or tartric or citric) acid. He wrote that the acid "can increase the sensitivity but may harm the purity of the whites and the durability" (of what -- sensitizer, print???).
Sorry, I have no further information on hand right now. And Im a bit confused because of his "purity of the whites" statement because oxalic acid is pretty effective for clearing highlights.
All the best
Kai
Received on Fri Apr 7 09:58:17 2006
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