Vapor sensing instruments for ultra trace chemical detection

Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample

Reexamination Certificate

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C422S050000, C422S068100, C422S082050, C422S082060, C422S082070, C422S082080, C422S082090, C422S082110, C422S083000, C422S052000, C422S051000, C422S051000, C436S043000, C436S164000, C436S171000, C436S172000

Reexamination Certificate

active

07419636

ABSTRACT:
A detector for detecting vapors emitted from analytes includes a housing, a pump and a sensing assembly. The housing has an inlet, an outlet and an enclosed sensing volume therebetween. The pump communicates with the housing for moving a carrier sequentially through the enclosed sensing volume at a predetermined flow rate. The sensing assembly senses the vapors of the analyte delivered by the carrier as the carrier passes through the housing. The sensing assembly includes a sensing unit constructed of an amplifying fluorescent polymer, a source of excitation, a detector, and a convertor assembly.

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