TSO3 Makes a Two-Unit Sale to a Hospital

December 17, 2007

Québec City, Qc, Canada, December 17, 2007 – TSO3 Inc. (“TSO3”) (TSX: TOS) announces a two-unit sale to a Canadian Hospital.

“For the first time, a client has purchased two units at the same time as a way to significantly decrease its use of the toxic Ethylene Oxide gas” said Ann Hewitt, VP Sales & Marketing for TSO3 Inc. “This is eloquent proof that our sterilizer is the most environmentally and economically attractive method to replace ETO.”

This two-unit purchase was made to transfer the maximum volume of medical devices from the ETO sterilizers into Ozone Sterilization. The hospital will be able to remove one ETO unit from its Central Sterilization Department right now and eventually, to remove the other ETO unit and completely cease the use of this toxic sterilizing agent in its CS Department.


About TSO3

TSO3, founded in Québec City in 1998, specializes in the research and development of innovative, high-performance medical instrument sterilization technology whit high commercial potential. The Company’s first product, the 125L Ozone Sterilizer, is designed for sterile processing centers in the hospital environment.

In contrast to other methods used, the ozone sterilization process developed and patented by TSO3 meets all standards required by the evolution in sterilization needs, which are: significant costs savings, increased safety for patients and hospital staff, and a “green” environmentally safe process. The Company believes that its technology represents an advantageous replacement solution to other low temperature sterilization processes currently used in hospitals.

The 125L Ozone Sterilizer is cleared for commercialization by the US Food and Drug Administration and by Health Canada. TSO3 is in commercialization phase for this first product since 2006.

TSO3 currently has more than 72 employees, about half of whom work in the sales and marketing team.

The statements in this release and oral statements made by representatives of TSO3 relating to matters that are not historical facts (including, without limitation, those regarding the timing or outcome of any financing undertaken by TSO3) are forward-looking statements that involve certain risks, uncertainties and hypotheses, including, but not limited to, general business and economic conditions, the condition of the financial markets, the ability of TSO3 to obtain financing on favourable terms and other risks and uncertainties.

The TSX has neither approved nor disapproved the information contained herein and accepts no responsibility for it.


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Source: TSO3 Inc.

Information:

Caroline Côté
Director, Corporate Communications & IR
(418) 651-0003, Ext. 237
Email: ccote@tso3.com
© 2005-2008 TSO3. All Rights Reserved.