Arizona Instrument (AZI) company designs, manufactures, and sells automated instruments for analyzing moisture content, and detecting and monitoring the presence of toxic gas. The equipment is used in a range of industrial, environmental and quality control applications. AZI's Jerome handheld analyzer detects toxic substances, such as mercury and hydrogen sulfide, while its Computrac Vapor Pro moisture analyzer spies moisture levels, key to quality control in producing cookie dough to tobacco, adhesives, paints, and plastics. The privately held company is owned by CEO George Hays, his father James Hays, and Harold Schwartz.