Electronic Sensor Technology Awarded Record $3 Million Order for zNose; Electronic Nose to Be Used by U.K. Security Company.

NEWBURY PARK, Calif. -- Electronic Sensor Technology, Inc. (OTCBB: ESNR), a leading provider of innovative Homeland Security solutions, announced today that it has been awarded an order from Sound and Optics International, Inc., a New Jersey distributor, valued at more than $3 million, for the Company's zNose(R), an electronic sensor device that can capture and analyze nearly any odor, fragrance, or chemical vapor within ten seconds. The devices are expected to be used by United Kingdom-based International Security Systems, Ltd. for security applications. The order increases the Company's backlog to nearly $5 million.

The order comes less than ten days after the Company was awarded a $1.25 million order for zNose(R) units from Beijing R&D Technology, based in China. The order represented the largest purchase the Company had received to date, and follows previous purchases by Beijing R&D Technology, which is distributing the product in China.

"We have seen a significant increase in demand for the zNose in recent weeks," said Matthew S. Collier, Chief Executive Officer of Electronic Sensor Technology. "In just the past two weeks, we have announced purchases for the zNose for use in three countries. We believe the strong demand for the device represents the growing need of companies internationally for innovative security solutions. The zNose utilizes state-of-the-art technology to detect and analyze odors or chemicals in a matter of seconds, making it an integral part of any security platform."

For additional details on United Kingdom security -related issues, interested parties may access the following link:

http://www.estcal.com/TechPapers/Security/Odors_of_Explosives2.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 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 report on form 10-KSB. The Company undertakes no obligation to update forward-looking statements to reflect events or circumstances after the date hereof.