Patent ID: 7943091
Filing Date: 2011-05-17
Classification: G01N,Y10S,Y10T

Abstract:
1. A chemical exposure indication device comprising: a substrate having a first surface and a second surface; an indicating layer overlying the first substrate surface; and means for removably attaching the device to a metallic structure, wherein the indicating layer comprises a coating material that is chemically reactive with a pre-determined chemical compound known to degrade the structure, such that when the coating material is exposed to a pre-determined level of the chemical compound, the coating material provides a visual indication of the compound's presence; wherein the pre-determined level of exposure corresponds to a level of exposure to the compound that is associated with degradation of the metallic structure; and wherein the coating material is chemically reactive with a chemical compound selected from the group consisting of ammonia, chlorine, hydrogen peroxide, iodine, alkaline hydroxides, and alcohols.