Reversible detector for gaseous carbon dioxide

Details Reversible detector for gaseous carbon dioxide Reversible detector for gaseous carbon dioxide

1996-10-29

1998-12-08

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

436133, 12820714, 422 57, 422 61, G01N 33497

Patent

active

058468366

ABSTRACT:
An apparatus and method for visually and continuously monitoring gaseous concentrations of electrophiles such as carbon dioxide. A coating composition comprising an organic binder, filler/pigment, an activator, and carbon dioxide sensitive color indicator interacts with a primed substrate to which it is applied for support. The coated primed substrate may then be used for estimation of carbon dioxide concentration by the detection of a substantially instantaneous and reversible color change of the coated primed substrate.

REFERENCES:
patent: 4928687 (1990-05-01), Lampotang et al.
patent: 4994117 (1991-02-01), Fehder
patent: 5178831 (1993-01-01), Sakota et al.
patent: 5183763 (1993-02-01), Mallow et al.
patent: 5322797 (1994-06-01), Mallow et al.

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