TSI Inc.
Expert

TSI Inc. designs and manufactures precision measurement instruments for the global market. The company partners with research institutions and customers around the world to develop solutions to measurement needs relating to aerosol science, air flow, indoor air quality, fluid dynamics and biohazard detection. Headquartered in Shoreview, Minnesota (USA), TSI has offices throughout Europe and Asia,

You can find more information about TSI at their website.