zNose-TM- Receives CE and CSA approval for Homeland Security Applications in Europe and Canada

NEWBURY PARK, Calif., April 22, 2005 - Electronic Sensor Technology (OTCBB: ESNR) today announced that its anti-terrorist technology, the zNose(TM), has received CE and CSA approval for sale in Europe and Canada. The zNose(TM) is sensitive enough to sniff out and recognize suspicious odors such as explosives, drugs, chemical weapons in cargo containers, buildings, and public transportation facilities such as airports, train stations, and subways. The zNose(TM) has passed an important milestone by completing product testing according to CSA 1010, EN 61010-1 and IEC 61326 protocols. The zNose(TM) will enhance security and public safety because it is able to quantitatively separate and measure the chemistry of any fragrance, odor, vapor, or smell with part per-trillion sensitivity in 10 seconds. Unlike trace detection technology, the Company's electronic nose can be trained to easily recognize an unlimited number of both single-chemical and multi-chemical compound odors or threat signatures.

According to Dr. Edward Staples, the President of Electronic Sensor Technology, "the zNose(TM) is an ultra-fast and sensitive chemical spectrum analyzer with the ability to detect extremely minute traces of odors and vapors." The availability of an electronic nose with the ability to quantify and recognize the chemical signature of security threats at the part-per-trillion level is a significant breakthrough. We expect the technology could enhance the ability of customer and shipping agents to meet their security requirements under CTPAT and CSI programs. The zNose(TM) will complement and enhance the performance of existing security screening measures, including canines, by providing an analysis of ambient odors which has not previously been available."

Founded in 1995, Electronic Sensor Technology has developed and patented a breakthrough chemical vapor analysis process. The Company's product line is positioned to eliminate key vulnerabilities in the homeland security market, specifically in commercial building HVAC security, maritime port security, airport security, and border security. Many of the Homeland Security initiatives have greatly increased the need to develop fast and accurate methods of detecting and identifying a broad range of terrorist threats. These markets are predicted to grow at rapid rates as a result of increasing government and private sector concern with present security levels.

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. Factors which could cause or contribute to such differences include, but are not limited to, failure to complete the development and introduction of new products, failure to obtain market acceptance of our products, declines in the value of the Company's common stock, and the unavailability of financing to complete management's plans and objectives. These risks are qualified in their entirety by cautionary language and risk factors set forth and to be further described in EST's filings with the Securities and Exchange Commission. The Company undertakes no obligation to update forward-looking statements to reflect events or circumstances after the date hereof.

Electronic Sensor Technology is a featured Company on HomelandDefenseStocks.com

For full details, click here: http://www.HomelandDefenseStocks.com/CO/ESNR/Default.asp

Contact:
For Electronic Sensor Technology:
CEOcast, Inc.
Ed Lewis, 212-732-4300

Source: Electronic Sensor Technology