Patent ID: 7988920

Claim:
A device for aerating a region after injection with vaporized hydrogen peroxide, the device including: a catalytic destroyer having a chemistry that catalytically reacts with the vaporized hydrogen peroxide to reduce the concentration of the vaporized hydrogen peroxide in the region; and one or more replaceable cartridges filled with a liquid solution comprised of a reactive chemistry that chemically reacts with the vaporized hydrogen peroxide to measurably reduce the concentration of the vaporized hydrogen peroxide in the region, wherein said reactive chemistry undergoes a color change only when a component of the reactive chemistry is fully consumed due to reaction with the vaporized hydrogen peroxide, wherein said catalytic destroyer and said one or more replaceable cartridges are disposed in series in a fluid flow pathway receiving air withdrawn from said region to sequentially reduce the concentration of vaporized hydrogen peroxide in the air, said catalytic destroyer located upstream of said reactive chemistry unit.