Metal Finishing Guide Book

2011-2012 Surface Finishing Guidebook

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Bath Type Soak cleaner* Parameter pH Total alkalinity CO3 Electro-cleaner* pH Total alkalinity CO3 –– and HCO3 – –– and HCO3 – Analytical Method Electrode, pH paper Acid-base titration Acid-base titration, pH titration Electrode, pH paper Acid-base titration Acid-base titration, pH titration *Emulsified oils should be removed occasionally from these tanks. Table 2: Analysis of Soak Cleaners and Electro-cleaners Bath Type Parameters pH Ni Watts' nickel Sulfate Chloride Boric acid pH Ni Sulfamate nickel Chloride Boric acid Woods' nickel pH Ni Chloride pH Ni Electroless nickel Hypophosphite Orthophosphite Inorganic additive Table 3: Analysis of Nickel Baths for Various Parameters 450 Analytical Method Electrometric pH electrode EDTA titration, AA, ICP, XRF Titrations, turbidity (N/A) AgNO3 titration, potentiometry Acid-base titration/mannitol Electrometric pH electrode EDTA titration, AA, ICP, XRF AgNO3 titration, potentiometry Acid-base titration/mannitol Electrometric pH electrode EDTA titration, AA, ICP, XRF AgNO3 Electrometric pH electrode Titration Redox titration Redox titration Polarography, CSV, IC titration, potentiometry

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