Apparatus for ion control of solutions

Details Apparatus for ion control of solutions Apparatus for ion control of solutions

1977-12-30

1980-02-26

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Differential fluid etching apparatus

With microwave gas energizing means

134 57R, 134103, 156627, 156640, 156642, C23F 100

Patent

active

041904818

ABSTRACT:
A system is provided for control of ion concentration (as for example in pH or redox control), for use for example in etching articles, wherein other features such as specific gravity control are also provided. The ion concentration control is provided with cleaning and recalibration features. In a specific embodiment, provision is made for adding ammonia to an etching solution and for continuously monitoring the pH of the system. Visual indicators are provided for operator observation of fluid flow through various lines, generally by windows being provided in the cabinet apparatus. A particular electrode cell is disclosed as a prominent feature of ion concentration control.

REFERENCES:
patent: 3062223 (1962-11-01), Malin et al.
patent: 3964956 (1976-06-01), Snyder
patent: 4015706 (1977-04-01), Goffredo et al.
patent: 4046248 (1977-09-01), Goffredo et al.
patent: 4058431 (1977-11-01), Haas

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