NEWBURY PARK, Calif.–(BUSINESS WIRE)–Sept. 25, 2006–Electronic Sensor Technology (EST), a leading provider of innovative homeland security and environmental solutions, announces the receipt of an order from the Republic of South Korea, Atomic Energy Research Institute (KAERI) for EST’s zNose® instrument and support equipment. The South Korean government has not revealed the use for this instrument.

“We are very pleased with this order from KAERI. I believe that the zNose® instrument from EST will provide the KAERI with a valuable tool to monitor the chemicals involved with their sensitive work. This procurement further strengthens the acceptance of the zNoseâ being experienced throughout Asia.” said Dr. Teong Lim, President, and CEO of EST.

More information on the use of the zNose® for monitoring polluting chemicals in water can be obtained by clicking the following link: https://www.estcal.com/TechPapers/Environmental/Phenol.doc
About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed and patented a chemical vapor analysis process. We believe that the Company’s product line is positioned to eliminate key vulnerabilities in the homeland security market, specifically in maritime port, airport, and border security applications.

SEC Filings and Forward-Looking Statements

This press release includes forward-looking statements, including the Company’s expectations regarding its ability to develop and access capital markets and its ability to achieve expected results in the chemical detection and analysis industry. The forward-looking statements are identified through the use of the words “potential,” “anticipate,” “expect,” “planned” and other words of similar meaning. These forward-looking statements may be affected by the risks and uncertainties inherent in the chemical detection and analysis industry and in the Company’s business. The Company cautions readers that certain important factors may have affected and could in the future affect the Company’s beliefs and expectations, and could cause the actual results to differ materially from those expressed in any forward-looking statement made by or on behalf of the Company.

Contact:

Electronic Sensor Technology

Frank Zuhde, 805-480-1994 X 135

or

Aurelius Consulting Group, Inc.

Jon Cunningham, 407-644-4256 X 107