USDA Selects zNose® from Electronic Sensor Technology in Experimenting the Detection of Contraband Food Products in Incoming International Mail and at Ports of Entry

Monday, July 16, 2007 8:30am EST

NEWBURY PARK, Calif.--(BUSINESS WIRE)—July 16, 2007--Electronic Sensor Technology (OTCBB:ESNR - News), a leading manufacturer of ultra-fast vapor analyzers, announced today that its zNose® has been selected by US Department of Agriculture (USDA) for evaluation of its suitability for use to detect contraband meat products and vegetation. Presently, the USDA randomly inspects incoming packages and mail at ports of entry for contraband food products. The zNose will enable the USDA to be more comprehensive in its inspection as well as improving the efficiency of the process.

The zNose® is the first electronic nose, based on ultra-fast gas chromatography, whose results have been validated by independent laboratories, including the Environmental Protection Agency and the White House Office of National Drug Control. The zNose contains a library of retention time indices for over 700 volatile organics which enables it to easily identify specific volatile organic compounds (VOCs).

A detailed discussion on the use of the zNose for the detection of meat can be accessed at:

http://www.estcal.com/TechPapers/Food/MapleSausage.pdf

About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed a patented a chemical vapor analytical process that enables analysis of nearly any odor, fragrance, or chemical vapor within ten seconds. We believe that the Company's product line is strategically positioned to address key vulnerabilities in the homeland security market, and is also suited for environmental and quality assurance 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.

Contact:

Electronic Sensor Technology
Frank Zuhde, 805-480-1994 X135