Patent ID: 7514039

Claim:
A system for measuring the concentration of at least one target substance, said system comprising: one or more carriers, at least one of said carriers having a plurality of reagent deposits thereon, said reagent deposits being arranged in a plurality of predetermined sets, containers wherein each of said sets of reagent deposits is contained, and pyroelectric film positioned adjacent said reagent deposits, said pyroelectric film being adapted for detecting heat absorbed in said reagent deposit and correspondingly delivering an output signal; and a reader engageable with said carriers and operable to initiate a measurement of the concentration of at least one target substance by exposing a selected set of reagent deposits, said reader being adapted to receive the output signal from said pyroelectric film to convert the output signal into a concentration of the target substance, wherein said carrier is detachable and re-engageable with said reader to initiate exposure of a second set of reagent deposits in a second container.