Electronic Sensor Technology, Inc. Receives Additional Order from International Fragrance Company

Tuesday October 23, 8:30 ET

NEWBURY PARK, Calif.--(BUSINESS WIRE)—October 23, 2007--Electronic Sensor Technology (EST) (OTCBB: ESNR.OB) continues to be a leader in the measurement of vapors. An international manufacturer of insect control products has placed an order for additional units of EST’s zNoseâ instrument. The instruments will join other zNoses that are used for research and development of various insecticides.

The user stated "The speed and high sensitivity offered by the zNose® makes the instrument a wonderful tool for high throughput and easy data analysis. You can’t beat its use for time studies.”

“This order represents the increasing acceptance of the zNose in the food, flavor, and fragrance industries where it is an ideal tool for the rapid characterization of product formulations. This industry is becoming a major market for EST.” remarked Frank Zuhde, Director of Marketing and Sales.

More information on the use of the zNose® can be obtained by clicking the following link:

http://www.estcal.com/

About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed and patented a chemical vapor analysis process.

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.

For Further Information:
Contact:

Electronic Sensor Technology
Frank Zuhde, 805-480-1994, ext. 135