G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 31/22 (2006.01) G01N 33/52 (2006.01)
Patent
CA 2075054
2075054 9112527 PCTABS00006 A device of the type which uses a moving boundary for detecting a fluid analyte. The device includes an impervious container (10, 12, 14) having a fluid entry aperture (20) and containing two contiguous layers. One of the layers is a detection layer (16) in the form of a sheet comprising a reagent to generate a signal by a reaction initiated by the analyte. The other layer (18) is a spreading layer permeable by the analyte position such that analyte entering the container spreads within the spreading layer. The device can be used, for example, as a gas monitor for indicating exposure to hazardous gases or vapours.
Churchouse Stephen John
Fitchett David James
Rey Louis
Kirby Eades Gale Baker
Whatman Plc
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