Determination of Chlorides concentration in acid copper baths
Chloride analysis allows the quantification of chloride ion concentration in acid copper galvanic baths. Chlorides are among the basic constituents of baths; in order to ensure proper deposition they must be in concentrations between 70 and 120 mg/L. Too low a concentration of chlorides causes opacity in the deposit and poor leveling; conversely, an excess of these ions results in streaking, loss of gloss and leveling.
Monitoring the concentration of chlorides in acid copper baths is essential as part of the quality control of galvanic processes to ensure their efficiency and meet the high quality standards required by the market.
Test principle
Chloride ions react with mercuric thiocyanate to form thiocyanate ions. Thiocyanate ions react with Fe (III) giving an orange-colored complex whose intensity, measured at 520 nm, is directly proportional to the concentration of chlorides in the sample.
Calibration curve
The calibration curve was obtained by correlating the CDR method with the reference method.
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The chemical analysis instrument for electroplating baths
CDR GalvanLab®
- Complete analysis panel, supplied already configured
- Up to 16 determinations simultaneously
- Possibility of carrying out analyses of the same sample
- Integrated printer
- Full connections (LAN - USB - Bluetooth barcode/QR code reader)
