Titrating apparatus and method

Details Titrating apparatus and method Titrating apparatus and method

1987-09-28

1990-08-21

Richman, Barry S.

Chemistry: analytical and immunological testing

Including titration or ph determination

436 51, 422 75, 422 76, 422 77, 356229, 356435, G01N 3116

Patent

active

049506102

ABSTRACT:
Titration apparatus includes two cells that receive and contain liquids and are transparent to light. A liquid having an unknown characteristic and mixed with an indicator that is optically responsive to a titrant is disposed in the cells. Light is transmitted through each cell to separate photosensors. The photosensor signals are compared and a titrant is added to one of the cells in known-volume increments until the difference between the signals reaches or exceeds a prescribed threshold. The characteristic of the liquid is calculated from the quality of known concentration titrant added in order to reach or exceed the prescribed threshold.

REFERENCES:
patent: 2726936 (1955-12-01), Bernheim
patent: 2960910 (1960-11-01), Pelavin
patent: 3031917 (1962-05-01), Pelavin
patent: 3236148 (1966-02-01), Pelavin
patent: 3422271 (1969-01-01), Fuhrmann
patent: 3707455 (1972-12-01), Derr et al.
patent: 4033330 (1977-07-01), Willis et al.
patent: 4537510 (1985-08-01), Takahasi
patent: 4613947 (1986-09-01), Suzuku et al.
patent: 4749552 (1988-06-01), Sakisako et al.
Theburn et al., "Development of a Commercial Automatic Colorimetric titrator", Anal. Chem., pp. 124-128, Jan. 1959.

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