Implant Sciences Receives Development Contract from Department of Homeland Security

Implant Sciences Corporation (AMEX: IMX) a leading developer of advanced explosives detection products and technology, today announced the award of a six month $100,000 Phase I Small Business Innovation Research ("SBIR”) contract by the Department of Homeland Security ("DHS”), Science & Technology Directorate in Washington, DC for the development of a handheld trace explosives sampler. The Company plans to use its proprietary vortex collection technology in the development of this handheld sampling device to augment the process of collecting the samples used in detecting and identifying a range of explosives materials. The contract management will be administered by the Department of Interior ("DOI”) Acquisition Services Directorate, National Business Center. Kenneth Ribeiro, Implant Sciences Vice President of R&D, commented, "Explosives sampling represents a unique problem in trace detection due to the unusual characteristics of explosives particles, some of which tend to cling to surfaces tenaciously. We believe the use of a compact and lightweight, portable hand sampler, incorporating our proprietary vortex collection technology, could improve the sampling process and ultimate detection of explosives particles. This improved sampling process could be used to detect explosives trapped on a wide range of objects such as carry-on luggage, parcels, packages and cargo. In addition, multiple handheld sampling units could be deployed in concert with a centralized trace explosives detection system to improve the efficiency and volume of articles screened. We are pleased to be working in partnership with the DOI and DHS and look forward to seeing our handheld sampler being used in the field as a new, cost effective tool in the detection of explosives.” About Implant Sciences Implant Sciences develops, manufactures and sells products through its primary business units: (i) explosives trace detection (ETD) systems for homeland security, defense, and other security related applications and (ii) state of the art services for the medical and semiconductor industries. The Company has developed proprietary technology used in its commercial portable and bench-top ETD systems which ship to a growing number of locations domestically and around the world. The Company’s ETD products address a growing range of needs in the Safety, Security, and Defense (SS&D) market including aviation, cargo, transportation, and other related elements of the government and commercial infrastructure. In addition to its SS&D market focus, the Company provides high technology coatings for a variety of medical products at its main facility in Wakefield, Massachusetts and provides ion implantation services to the semiconductor industry from its location in Sunnyvale, California. For further details on the Company and its products, please visit the Company’s website at www.implantsciences.com. Implant Sciences believes this press release contains forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are subject to risks and uncertainties. Such statements are based on management's current expectations and are subject to facts that could cause results to differ materially from the forward-looking statements. For further information, you are encouraged to review Implant Sciences’ filings with the Securities and Exchange Commission, including its Annual Report on Form 10K for the period ended June 30, 2007 and Quarterly Report for the period ended September 30, 2007. The Company assumes no obligation to update the information contained in this press release.