RKI Instruments, Inc. is an innovative gas detection company located in Union City, California. RKI was established in 1994 by Sandra Gallagher and myself. We both believe that customers and distributors deserve a reliable source for advanced gas detection equipment as well as solutions to specific gas monitoring applications.RKI is partnered with Riken Keiki Co. Ltd., the world leader in gas detection and sensor technologies. In business for over 70 years, Riken has sold over 800,000 portable and fixed gas monitors worldwide with annual sales exceeding $220 million. They have over 700 employees, a large number of which are engineers and scientists. RKI is the exclusive North American supplier of Riken products.