TSI Incorporated, headquartered in Shoreview, Minnesota, is a global leader in precision measurement instrumentation, software services and workflow management.

Note: A security vulnerability in a widely used software component known as “Log4j” or “Log4Shell” has prompted many customers to ask if TSI software products incorporate it.

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TSI's full line of industrial ventilation test instruments are designed to accurately and reliably measure a wide variety of parameters important in monitoring and maintaining indoor environments

Getting in touch with TSI is easy. Please complete the form below and a TSI representative will reach out to you shortly.

TSI, headquartered in Minnesota, has a global network with sales, service, and support locations in the UK, Singapore, China, India, and Germany. Wherever you are, we are there to support you.

TSI started in 1961 in Minneapolis, Minnesota. In 1976, TSI built a 32,000 square foot facility in Shoreview, Minnesota, a suburb just north of the capital city, St. Paul.

Jul 10, 2025 · TSI Incorporated is proud to announce a significant expansion to the TSI OmniTrak™ Solution – an integrated platform revolutionizing occupational and industrial hygiene investigation …

At TSI we believe in creating a better world by helping protect people, products, and the environment and optimizing research and industrial processes on a global basis. We are honest in our dealings …

Visit the TSI history page to browse highlights from our 50+ years building world class measurement instruments.