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Reversible Detector for Gaseous Carbon Dioxide

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.

Patent Number: 
6,677,159
Date Of Issue: 
01/13/2004
Inventors: 

William A. Mallow