The Chameleon Training Kit, used during training, helps initial responders learn to identify the presence of toxic chemicals through a training Chameleon armband with special inactive cassettes that show the difference between unaffected cassettes and cassettes that read a chemical in the environment. Also included in the kit are blue training cassettes (50 total) and ammonia ampoules that enable the instructor to demonstrate, in a well-ventilated area, how the cassettes change color when exposed to a chemical.