Q. Can you give me a titration procedure to check chloride concentrations in the PC-667 acid copper bath? R.V.
A. The plating bath being referred to is used in the printed circuit industry and is an Electro-Brite product. As I always suggest, you should contact your vendor to see if it has a standard procedure available for this test. A standard procedure is:
Using a 50 mL sample:
The chloride ion concentration (ppm) = mL of titrant x 709.1 x N
The data sheet for this particular plating bath specifies a chloride concentration of approximately 60 ppm.