Patent ID: 8647579
Filing Date: 2014-02-11
Classification: G01N,Y10T

Abstract:
1. An apparatus for detecting vapor-phase hydrogen peroxide, said apparatus comprising: a housing having a passageway therethrough, said passageway comprising a portion having a non-linear path; an inlet for receiving a vapor-phase sample in fluid communication with said passageway; an outlet in fluid communication with said passageway; a pump in fluid communication with said passageway, said pump suitable for drawing the vapor-phase sample from the exterior of said housing into said passageway; a sensing assembly arranged within the housing and in fluid communication with said passageway, said sensing assembly comprising a glass capillary comprising a chemiluminescent material, and an optical light detector, said chemiluminescent material having at least component reactive with hydrogen peroxide; and a light-blocking tip arranged within the housing, wherein the light blocking tip comprises the inlet and an air deflector component which forms the non-linear path within the light-blocking tip such that the vapor-phase sample entering the inlet is forced through the non-linear path and ambient light is substantially precluded from contacting the sensing assembly.