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Doctor Solution formula for Zinc Cyanide plating

Can anyone help me in formulation of Doctor Solution for Zinc Cyanide plating because we have the problem of blisters and embrittlement and please also give the details of DS

Abdul Baseer Siddiqui
Process auditor - Karachi, Pakistan
August 15, 2011

Doctor Solution is Sodium or potassium polysulfide used to precipitate out insoluble metal sulfides such as lead etc.
Add sufficient to just have a slight excess which is checked by testing with lead acetate papers.

Geoffrey Whitelaw
- Port Melbourne, Australia
August 17, 2011

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