Ion concentration testing apparatus

Details Ion concentration testing apparatus Ion concentration testing apparatus

1977-11-17

1979-12-25

Yasich, Daniel M.

Signals and indicators

Indicators

Chemically activated type

356246, 422 58, G01N 3122

Patent

active

041800095

ABSTRACT:
A device for determining the ion concentration of certain substances, or mixtures of substances, in swimming pool water by admixture of color forming chemical reagents comprising measuring containers and at least one reference container combined to form a row of containers which have a common side wall. An indicating screen with a plurality of fixed, differently tinted indicating windows associated with the individual containers and distributed over the height of the containers is arranged in front of the common side wall, and the indicating windows associated with the reference container or containers are provided with a standard coloration relating to that formed by the color forming reagents.

REFERENCES:
patent: 3176577 (1965-04-01), Frank
patent: 3186556 (1965-06-01), Forsstrom
patent: 3579306 (1971-05-01), Crane
patent: 3691017 (1972-09-01), Brown et al.
patent: 3701633 (1972-10-01), Davis
patent: 3712746 (1973-01-01), Bergeron
patent: 3913790 (1975-10-01), Seidel
patent: 3964831 (1976-06-01), Frank
patent: 3994594 (1976-11-01), Sandrock et al.
patent: 4060388 (1977-11-01), Rapp et al.

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