PM-560 COBALT CHLORIDE PAPERS

For the detection of moisture, and heat. Can also be used to
indicate when desiccants such as silica gel are exhausted. Cobalt
Chloride paper also have an application for the detection of
moisture in the atmosphere. For example, crates containing
machinery for transportation where the presence of moisture
could induce deterioration by rust. By heat the paper colour will be
converted from light pink to sky blue.