TSI imagines, designs, and develops products that solve measurement problems. We collaborate with colleges and universities, research groups, and businesses around the world to set the standard for measurement expertise.

Operating at a global and human scale

At TSI, our global team strives to provide not only instruments, but also innovative solutions. We operate at both a global scale and a human scale—instruments that measure everything from atmospheric aerosols to the fit of a personal respirator. Turning data into actionable information enables our customers to do their jobs more efficiently. TSI understands the science, the data, and the processes that support your work.

TSI worldwide support

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.

Since 1961, we’ve set the standards for precision instrumentation and software solutions. Every day, our dedicated employees turn research into reality.


Whatever role you take on - a facility manager, property owner, or HR manager, indoor environments vary between every building and room. 

Learn More