Fiber optic pH sensor having low drift rate

Details Fiber optic pH sensor having low drift rate Fiber optic pH sensor having low drift rate

1987-08-20

1989-01-31

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525369, 8555, C08F 812

Patent

active

048016551

ABSTRACT:
A hydrolyzed dye/gel polymer for use in a pH-based sensor is characterized by its chemical and optical stability with respect to dye loss with time. Preferably, the dye/gel polymer is hydrolyzed by heating in a dilute base solution for a period of time sufficient to remove weakly bonded dye molecules from the polymer, then washed to remove the base solution and loose dye.

REFERENCES:
patent: 3984204 (1976-10-01), Jenkins et al.
patent: 4166804 (1979-09-01), Bleha et al.
patent: 4194877 (1980-03-01), Peterson
patent: 4200110 (1980-04-01), Peterson et al.
patent: 4378971 (1983-04-01), Schwartz
patent: 4466941 (1984-08-01), Cerami
patent: 4476870 (1984-10-01), Peterson et al.

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