Archive for April 23rd, 2009

Complete Elimination of Metal Compounds from Mordant before Disposal

Thursday, April 23rd, 2009

I have been communicating with two European etchers who have been using my copper sulfate mordant for as long as ten years on zinc plates at large print studios. When it came to the disposal of the spent mordant, one group was told by a chemist to add sodium carbonate which would remove the zinc […]

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