About Us

A global leader in antimicrobial protection, Thomson Research Associates (TRA) was established more than fifty years ago in Toronto, Canada. Today, our Ultra-Fresh and Silpure antimicrobial products are used by hundreds of manufacturers in more than 40 countries around the world.

A symbol for lasting freshness and hygiene in textiles and polymers.
Harness the power of natural silver to inhibit bacterial growth in textiles and garments.

Who We Are

Read about Thomson Research Associates – the experts behind the Ultra-Fresh and Silpure brands.

Our Lab

Demonstrate the effectiveness of your treated product in our laboratories.

How We Work With You

Learn about our collaborative process.

Our Brands

Discover why our customers trust Ultra-Fresh and Silpure brands.


Browse frequently asked antimicrobial, antifungal, and antibacterial questions.

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