Apr 13, 2011

CuSO4 What does it do and why is the concentration important?

The copper sulfate dissociated in the bath is the source of the copper ions (Cu++) for plating
Too low a concentration and there’s not enough copper ions getting to the cylinder, this can allow co-deposition of impurities
Too high a concentration and the copper ions inhibit the co-deposition of the additive

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