Electronic Sensor Technology Receives Follow-on Order from Leading Chinese Research Institute for zNose; Product to Be Used for Environmental Applications.

NEWBURY PARK, Calif. -- Electronic Sensor Technology, Inc. (OTCBB: ESNR), a leading provider of innovative Homeland Security solutions, announced today that it has received a follow-on order from Beijing R&D Technology, based in China, for zNose(R), its electronic sensor device that can capture and analyze nearly any odor, fragrance, or chemical vapor within ten seconds. Previously, the firm had place several trial orders for environmental and homeland security applications.

"We are pleased to receive a follow-on order so quickly from Beijing R&D," stated Matthew S. Collier, President of Electronic Sensor Technology, and "we believe that China represents one of the most promising markets in environmental remediation and monitoring. Owing to the initial success in its initial testing utilizing zNose(R), Beijing R&D has placed another follow-on order."

China represents a significant potential market for the zNose, as the country has significant water and air pollution problems. The zNose is an ideal tool as a pre-screener for environmental application because of its rapid response and sensitivity to wide spectrum of odors. zNose also has important security capabilities, as it can quickly detect dangerous chemical vapors (toxic and nerve agents) in the air. The Beijing Police Force, in preparation for the 2008 Olympics, has sent officers to Electronic Sensor Technology's headquarters for additional training.

Additional information about how zNose(R) can be used as pre-screening tool for the environmental applications can be obtained by downloading the following technical paper from the company's website:

http://www.znose.com/download/AWMA-2005.pdf

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.