TSO3 announces filing of final short form prospectus

Not for distribution to U.S. news wire services or dissemination in the United States.

Ticker: TSX - TOS
Shares Outstanding: 65,888,182

QUÉBEC CITY, Feb. 25, 2013 /CNW Telbec/ - TSO₃ Inc. ("TSO₃" or the "Company") (TSX: TOS) an innovator in sterilization technology for medical devices in healthcare settings, is pleased to announce that it has filed a final short form prospectus with the securities regulatory authorities in all provinces of Canada with respect to a previously announced public offering of 7,000,000 common shares (the "Common Shares") at the price of CDN $1.00 per Common Share (the "Issue Price") for aggregate gross proceeds to TSO₃ of CDN $7,000,000 (the "Offering").

The offering is being made on a bought deal basis through a syndicate of underwriters co-led by Desjardins Securities Inc. and Canaccord Genuity Corp. and including Byron Capital Markets Ltd. and Laurentian Bank Securities Inc. (collectively, the "Underwriters"). The Offering is expected to close on or about March 4, 2013 and is subject to customary conditions and regulatory approvals.

The Company has granted the Underwriters an over-allotment option, exercisable for a period of 30 days following the closing of the Offering, to purchase up to an additional 15% of the number of common shares issued from treasury pursuant to the Offering, at the Issue Price.

As the Company actively pursues US regulatory clearance for the STERIZONE® 125L+ Sterilizer, net proceeds from the Offering will be used to strengthen the Company's financial position in negotiating a channel partner agreement. The proceeds will also allow for continued new product development.

The Toronto Stock Exchange (the "TSX") has conditionally approved the listing of the Common Shares, subject to TSO₃ fulfilling all of the listing requirements of the TSX on or before May 16, 2013.

This news release is not an offer of securities for sale in the United States and is not an offer to sell or solicitation of an offer to buy any securities of the Company, nor shall it form the basis of, or be relied upon in connection with any contract for purchase or subscription. Securities may not be offered or sold in the United States absent registration under the U.S. Securities Act of 1933 (the "Securities Act") or an exemption from registration thereunder. These securities have not been and will not be registered under the Securities Act or the securities laws of any state and may not be offered or sold in the United States absent registration under the Securities Act and applicable state securities laws or pursuant to an applicable exemption therefrom.

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.  TSO₃ designs products for sterile processing areas in the hospital environment and offers an advantageous replacement solutions to other low temperature sterilization processes currently used in hospitals.

For more information about TSO₃, visit the Company's Web site at www.tso3.com

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.

SOURCE: TSO3 Inc.

Caroline Côté
Director - Investor and Business Relations
[phone], Ext. 237
Email: [email protected]