Optical measurement of concentration

Details Optical measurement of concentration Optical measurement of concentration

1979-07-23

1981-12-22

Serwin, Ronald

Chemistry: physical processes

Physical processes

Crystallization

23230B, 23928, 128633, 204195M, 356 39, 356306, 422 68, 422 91, G01N 2180, G01N 3348

Patent

active

043068774

ABSTRACT:
The concentration of a substance of interest is measured by exposing a peable-membrane face of an indicator chamber containing an indicator to the substance, monochromator radiation being incident upon the indicator through a transparent wall of the indicator chamber, the exiting radiation being received by a light-metering unit for ascertainment of the effect upon the indicator's absorbence of fluorescence of the substance of interest. The indicator substance is additionally exposed to a reference substance of known concentration which is permitted to engage the indicator substance by diffusion through such permeable membrane, in order that the indicator be calibrated.

REFERENCES:
patent: 3907503 (1975-09-01), Betts
patent: 3918910 (1975-11-01), Soya et al.
patent: 3932132 (1976-01-01), Hijikata
patent: 4003707 (1977-01-01), Lubbers et al.

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