Electronic Sensor Technology Inc. Announces Airline Cabin Air Quality Study

   Electronic Sensor Technology Inc. (PINKSHEETS: ESNR), a leading provider of ultra-fast vapor analyzers, announced today that it has received a contract from a major airline to characterize in flight cabin air.

The airline industry is always working to improve the public's flying experience. Under this contract, EST will work in conjunction with a major airline to develop a profile of odors normally found in airplane cabins in flight. In addition, EST will look for the presence of vapors that may be associated with aircraft systems such as air conditioning, hydraulic control systems, auxiliary power units, etc. The airline believes that by evaluating air quality on a regular basis, it will be able to better maintain both the passenger comfort systems and the safety systems, saving costs and improving aircraft utilization and increasing passenger comfort.

The zNOSE is a very versatile, ultra-fast Gas Chromatography instrument (GC). More than 600 instruments have been sold around the world. The instrument is used wherever real time analysis of volatile organic compounds and vapors is required. These include detection of contamination of drinking water supplies, detection of explosives narcotic contraband, food adulteration. It is used in medical research to detect trace amounts of volatile organic compounds found in human breath that are associated with lung cancer and other diseases. For more information, please visit our website at http://www.estcal.com.

About Electronic Sensor Technology: Founded in 1995, Electronic Sensor Technology has developed and patented a chemical vapor analysis process. EST's product provides near real time analysis of gasses detecting volatile organic compounds in amounts as low as one part per trillion. EST's product has been shown to detect salmonella and e-coli contamination of food sources; chemical warfare agents such as Sarin and Agent Orange and Chemical pollutants in the environment.

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.

Contact: Electronic Sensor Technology William Wittmeyer 805-480-1994 ext 105 805 214 1860 direct 650 714 0823 cell http://www.estcal.com