Patent ID: 7640782
Filing Date: 2010-01-05
Classification: A61L,G01N

Abstract:
1. An apparatus for calibrating a concentration sensor for sensing concentration of vaporized hydrogen peroxide, said apparatus comprising: an enclosure defining a chamber; a first temperature sensor for generating a first signal indicative of the temperature within the chamber; a vessel defining a cavity, said vessel including isolation means movable between a closed position for isolating the cavity from the chamber and an open position wherein the cavity is in fluid communication with the chamber; first supply means for supplying an aqueous solution of liquid hydrogen peroxide to the cavity; a first concentration sensor for generating a second signal indicative of a concentration of liquid hydrogen peroxide within the cavity; a controller storing data for correlating a concentration of liquid hydrogen peroxide at a predetermined temperature to a concentration of vaporized hydrogen peroxide, said vaporized hydrogen peroxide being derived from said aqueous solution of liquid hydrogen peroxide, wherein said controller includes: