Methods of measuring and controlling activity of zinc phosphate

Details Methods of measuring and controlling activity of zinc phosphate Methods of measuring and controlling activity of zinc phosphate

1994-02-10

1995-10-10

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415315, 2041531, G01N 2726

Patent

active

054568102

ABSTRACT:
A prescribed amount of a simple fluoride is added to a zinc phosphate treatment solution, which is a target solution, the HF concentration in the target solution is measured with a silicon electrode meter after the addition, and the concentration of the consumed HF is calculated to evaluate the activity of the target solution, for adding the simple fluoride to the zinc phosphate treatment solution so that its activity is in a control reference range.

REFERENCES:
patent: 3329587 (1967-07-01), Steinbrecher et al.
patent: 3573174 (1971-03-01), Caro
patent: 3681207 (1972-08-01), Russell
patent: 4263104 (1981-04-01), Diggens et al.
patent: 5211769 (1993-05-01), Sobata et al.

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