Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1993-03-25
1994-08-09
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
204434, G01N 2726
Patent
active
053363809
ABSTRACT:
A method of monitoring major constituents within a plating bath. The method involves applying an electrical signal to a working electrode positioned within the plating bath solution, varying signal parameters, and measuring the resultant response signal. The characteristics of the response signal indicate major constituent concentration levels. The method complements and is easily integrated with known voltammetric techniques for analysis of trace constituents, thus forming an integral part of an efficient overall plating bath analysis system. By adjusting major constituent concentration levels in accordance with measurements made using the method of the present invention, a high quality plating bath can be easily and inexpensively maintained.
REFERENCES:
patent: 4631116 (1986-12-01), Ludwig
Eliash Bruce M.
Ludwig Frank A.
Phan Nguyet H.
Reddy Vilambi N. R. K.
Bell Bruce F.
Denson-Low W. K.
Hughes Aircraft Company
Lachman M. E.
Niebling John
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