Implant Sciences Accepts Quantum Sniffer™ Order for ''First Responder'' Law Enforcement Agency in New Jersey; Implant Sciences Continues to Penetrate New Domestic Security Markets for Quantum Sniffer Explosives Detector

Business Wire, June 19, 2006

WAKEFIELD, Mass. -- Implant Sciences Corporation (AMEX: IMX) a developer and manufacturer of products for national security, medicine and industry, today announced a new order for one of our Quantum Sniffer handheld explosives detectors to be used by a law enforcement agency in New Jersey. As outlined in the Homeland Security Presidential Directive/HSPD-8, the term "first responder" refers to those individuals who in the early stages of an incident are responsible for the protection and preservation of life, property, evidence, and the environment, including emergency response providers as defined in section 2 of the Homeland Security Act of 2002 (6 U.S.C. 101), as well as emergency management, public health, clinical care, public works, and other skilled support personnel (such as equipment operators) that provide immediate support services during prevention, response, and recovery operations.

Joanne Arsenault, Implant Sciences' VP of Sales & Marketing-Security Division, stated, "We continue to make progress in introducing our Quantum Sniffer into different verticals within the security marketplace. Over the past several weeks we have taken domestic orders from different public agencies and private companies that we believe will use our explosives detector for shipboard, cargo and overnight delivery security applications. This current order represents our first demonstrated success with "first responders." We have been working with state and local law enforcement agencies in evaluating the importance of the Quantum Sniffer explosives detector as an adjunct to equipment currently used for various security applications. We believe our current efforts could lead to additional orders from "first responders."

About Implant Sciences

Implant Sciences, incorporated in 1984, is using its core ion technology to develop, manufacture and market products for the homeland security, semiconductor and medical device industries. The Company has developed and commercialized portable and bench-top detection devices to identify explosives which are distributed under the Quantum Sniffer(TM) brand name. The Company also provides state of the art ion implantation and wafer analytical services for the semiconductor industry. The Company also develops, manufactures and sells radioactive products for the treatment of cancer, including sales of radioactive seeds for the treatment of prostate cancer and development of a new, FDA approved radioactive source for use in the treatment of breast cancer. For further details on the Company and its products please visit the Company's website at www.implantsciences.com.

Implant Sciences believes that 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 10-KSB for the period ended June 30, 2005, and Quarterly Report on Form 10-Q for the period ended September 30, 2005, December 31, 2005, and March 31, 2006. The Company assumes no obligation to update the information contained in this press release.