Electronic Sensor Technology's zNose(R) Deployed by China Heilongjiang Environmental Protection Agency in Songhua River Cleanup.

NEWBURY PARK, Calif. -- Electronic Sensor Technology (OTCBB: ESNR), a leading provider of innovative Homeland Security solutions, announced today that its zNose(R) has been deployed by China's Heilongjiang Environmental Protection Agency (HEPA) to test the contaminated water in northeastern China caused by a recent chemical plant explosion. The zNose(R), which is an electronic sensor device that can capture and analyze nearly any odor, fragrance or chemical vapor within ten seconds, is the only portable detector capable of measuring the polluted water containing benzene, aniline and nitro-benzene to low parts per billion sensitivity in a near real-time speed of less than 10 seconds. Harbin, the capital of Heilongjiang, suffered a five-day water shutdown after a blast at a PetroChina plant upstream released 100 tons of chemicals into the Songhua River, which provides most of the city's drinking water.

Beijing R&D Technology, which recently signed a distribution agreement with Electronic Sensor Technology for the zNose(R), is providing technical assistance to officials of HEPA. As a result of successful testing to date, HEPA has elected to expand the use of the zNose(R) to further test water that may be affected in cities and areas surrounding the Songhua River, in conjunction with local EPA engineers.

"In addition to playing a key role in security and defense applications, the zNose(R) has proven to be a highly useful tool in environmental disasters such as this one," said Matthew S. Collier, President and CEO of Electronic Sensor. "Through our solid relationship with Beijing R&D, along with the successful use of the zNose(R) in this and other applications in the region, the Chinese market represents a highly lucrative opportunity for the Company in the future."

A translated video news clip that appeared recently on Chinese television news station, HLJ News, is available at the link provided below. The video news clip features Wen Chao, Chief of the Heilongjiang EPA, explaining the use of the zNose(R) in support of the cleanup operation on the Songhua River.

A link will be available at www.znose.com on the Home Page after 12pm eastern time today.

About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed and patented a very unique chemical vapor analysis process. We believe that the Company's product line is positioned to provide a solution to key vulnerabilities in the homeland security and environmental 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.