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Just don't store your potassium ferricyanide for cyanotypes, too close to the sulphuric acid you use as a photgraphic bleach. They don't do too well together.
by abruzzi 5y ago
Just don't store your potassium ferricyanide for cyanotypes, too close to the sulphuric acid you use as a photgraphic bleach. They don't do too well together.