Electronic Sensor Technology, Inc. engages in the development of chemical vapor analysis process. It develops, manufacture and sale a patented product which is designed to detect and analyze chemical odors and vapors. The company process applies gas chromatography calculations and technology towards the industries, including homeland security, life sciences, chemical and petrochemical, food & beverage and environmental. Its products include Portable zNose-Model 4600 & Model 4200, Battery Operated zNose-Model 4300 and Benchtop zNose-Model 7100. The company was founded by Teong C. Lim in 1995 and is headquartered Newbury Park, CA.