Electronic Sensor Technology Appoints Matthew S. Collier to Board of Directors.

NEWBURY PARK, Calif. -- Electronic Sensor Technology, Inc. (OTCOB:ESNR), a leading provider of innovative Homeland Security systems, announced today that it has appointed Matthew S. Collier to the EST Board of Directors. The appointment increases the company's board membership to six. Mr.

"We are very pleased to have Mr. Collier join the EST Board of Directors. His appointment is timely. Mr. Collier's extraordinary leadership, know-how and experience in government, the military, and in prior high technology companies; along with his expertise in working with the chemical and transportation industries, and with top international governmental emergency response officials will prove invaluable as Electronic Sensor Technology strives to become a more dominant player in the Homeland Security market," said James H. Frey, Chairman of Electronic Sensor Technology.

Mr. Collier previously served as President of SAFER Systems, a privately-held-company which manufactures emergency response software for international government applications as well as for the global chemical and transportation industries.

Accepting the directorship, Mr. Collier commented, "I am honored and excited to be a member of the EST Board of Directors. I believe that zNose(R), a product of Electronic Sensor Technology, will play a very important role in helping to secure our country through its unique ability to provide comprehensive, accurate real time analysis of any chemical vapor with part-per-trillion sensitivity."

Prior to his stint as President of SAFER Systems, Mr. Collier served as Vice President of Engineering for Sensors, Inc., a designer and manufacturer of highly sensitive emissions measurement sensors into the world-wide automotive test and maintenance market.

"His vast experience in the manufacturing and world-wide marketing of sensor products will help EST immensely," added Mr. Frey, EST Chairman.

Mr. Collier holds degrees from the United States Military Academy at West Point and Harvard University. After directing a U.S. Congressional office for two years as Chief of Staff, Mr. Collier served as Mayor of Flint, Michigan from 1987 to 1991.

About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed and patented a chemical vapor analysis method. We believe that the Company's product line is positioned to eliminate the key vulnerabilities in the maritime port, airport, and border security applications. The following link will provide more information of EST's zNose(R).

http://www.znose.com/

SEC Filings and Forward-Looking Statements

This press release includes forward looking statements, including the Company's expectations regarding its ability to achieve expected results in the chemical detection and analysis industry. The forward looking statements are identified through 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. For a discussion of these factors, please refer to our recent filings with the Securities and Exchange Commission, including our most recent reports on Form 10-KSB, Form 10-QSB and Form 8-K. The Company undertakes no obligation to update forward-looking statements to reflect events or circumstances after the date hereof.