TSO3 Sells its 28th Ozone Sterilizer to a Major Healthcare System

May 1, 2008

Québec City, Qc, Canada, May 1st, 2008 – TSO3 Inc. (“TSO3”) (TSX: TOS) announces its 28th sale, this time to an American healthcare system in the South East. This sale is the second one to occur early in the quarter.

This most recent sale was made to a healthcare system which is a leader in its region, providing care to two million residents and to international visitors as well. Its location in a large southeastern city provides TSO3 with an additional commercial window to showcase the 125L Ozone Sterilizer to potential customers.


About TSO3

TSO3, founded in Québec City in 1998, specializes in the research and development of innovative, high-performance medical instrument sterilization technology with 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
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