TSI Incorporated serves a global market by investigating, identifying and solving measurement problems. As an industry leader in the design and production of precision measurement instruments, TSI partners with research institutions and customers around the world to set the standard for measurements relating to aerosol science, air flow, indoor air quality, fluid dynamics and biohazard detection. With headquarters based in the U.S. and field offices throughout Europe and Asia, TSI has established a worldwide presence in the markets we serve. Every day, our dedicated employees turn research into reality.
Find locations served, office locations and our distributors
- Business Type:
- Industry Type:
- Air Monitoring and Testing
- Market Focus:
- Globally (various continents)
- Year Founded:
- Over 1000
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
Our Mission, Vision and Guiding Principles
The world has changed a lot since TSI started building instruments in 1961, but some things remain the same. TSI’s commitment to our customers’ success, our dedication to research, and our drive to make the world a better place have always been part of our history.
Recently, TSI refined our Mission and Vision Statements, as well as articulated our Guiding Principles. A company’s Mission establishes a foundation for the organization. A Mission is the reason the company exists. Why are we here? What problems do we solve for our customers? A Vision describes what the future looks like if we are successful in delivering our Mission.
TSI Mission: TSI provides trusted measurement, application guidance, and data analytics solutions that enable our customers to make informed decisions.
TSI Vision: creating a better world by helping protect people, products and the environment, and by optimizing research and industrial processes.
To deliver our Mission and achieve our Vision, TSI must live our Guiding Principles. These principles are the basis of how we behave—every day, every interaction, everywhere in the world.
Integrity - We conduct business with integrity and with the highest ethical standards. Therefore, we will be honest in our dealings with our customers, business partners and each other. We will be open and direct in our communications.
Commitment - We believe commitment and reliability are important to our company and customers. Therefore, we will take personal accountability for our actions and address problems head on. We will take personal responsibility for decisions, both good and bad. We will do what we say we are going to do. We do not blame others. We are not afraid to share bad news.
Contribution - We believe the contribution of each employee is critical to our success. Therefore, we will foster an environment that promotes initiative, passion and commitment.
Collaboration - We value the power of collaboration. Therefore, we will foster an environment that promotes teamwork. We will actively seek input from coworkers, customers and business partners and will be open and direct in our communication.
Relationships - We believe in the value of customer relationships. Therefore, we will create an environment where all employees strive to understand and meet customer’s needs. We will diligently work to exceed their expectations with every interaction.
Professional - We believe we must be professional in everything we do. Therefore, we will be knowledgeable and prepared with our assignments and responsibilities and will treat everyone with respect and courtesy.
TSI's Quality policy is to meet or exceed our customers' needs and expectations through continual improvement of our processes, products and services.
Below, we have listed links to various forms of certifications:
- TSI Inc. ISO 9001:2015 Certificate
- TSI Instruments Ltd. BS EN ISO 9001:2015 Certificate
- ISO 9001 : 2015 (Singapore)
- TSI Instruments Ltd: ISO 14001:2015
- MSP Corporation: ISO 9001:2015
- ISO 9001: 2015 (Oconomowoc)
- ISO 17025 (Oconomowoc)
- ISO 17025 LMP010 (High Wycombe)
- ISO/IEC 17025:2017 (Shoreview)
- ISO/IEC 17025:2017 (High Wycombe)
- TSI UKAS Schedule of Accreditation (High Wycombe)
Below find links to documents outlining TSI corporate policies.
- Decontaminated Instrument Communication
- Environmental Policy - TSI Instruments Ltd.
- Montreal Protocol – Declaration – Substances That Deplete the Ozone Layer in Relationship to: CEPA (Canada), Environmental Protection Act, 1999
- Montreal Declaration – EPA Clean Air Act (USA) Declaration – Substances that Deplete the Ozone Layer
- Payments, Returns, and Repairs Information
- TSI Quality Policy
- REACH Declaration - Substances of Very High Concern
- TSI Conflict Minerals Policy Statement
- TSI Credit Application - US
- TSI Credit Application - Europe
- TSI Sales Terms and Conditions (USA)
- TSI Sales Terms and Conditions (UK)
- TSI Sales Terms and Conditions (CN)
- TSI Sales Terms and Conditions (FR)
- TSI Sales Terms and Conditions (DE)
- TSI Sales Terms and Conditions (DE - English Version)
- TSI Incorporated and DICKEY-john Corporation Suppliers- Purchase Order Terms and Conditions
In 1961, University of Minnesota alumni Leroy (Mike) Fingerson, Ph.D., and Lowell Nystrom, and three other engineers began working on a project that would become TSI Incorporated. Only Fingerson and Nystrom stayed on full-time with the new company, to become our first CEO and CFO respectively.
TSI and the University of Minnesota
From those early days to the present, TSI has had a special and historical relationship with the University. We have hired and promoted countless Gopher grads in engineering and other fields. Each year, interns from the U of M and other local schools brighten our halls for a summer or a semester, trying on careers in manufacturing and applied science.
Chairs in Mechanical Engineering
The Fingerson - TSI Incorporated Chair
In 1998, the TSI Board of Directors and Mike Fingerson endowed a faculty Chair in the Mechanical Engineering department at the University of Minnesota. This donation provides ongoing support to mechanical engineering research at the U. Since the endowment, Professor David Pui, Ph.D. has held the Leroy Fingerson - TSI Chair in Mechanical Engineering. Dr. Pui is a Distinguished McKnight University Professor, a fellow of the American Society of Mechanical Engineers. In 2016, the National Academy of Engineering (NAE) elected him as a member, one of engineering’s most prestigious professional distinctions. He has served as president for both the American Association for Aerosol Research (AAAR) and the International Aerosol Research Assembly (IARA), and currently is Director of the Particle Technology Laboratory and the Center for Filtration Research at the University.
The LIU - TSI Incorporated Chair
In 2018, TSI agreed to endow a fund establishing another Chair in the U of M Mechanical Engineering department. The Benjamin Y.H. Liu - TSI Applied Technology Chair in Mechanical Engineering recognizes University alumnus Dr. Benjamin Liu. Dr. Liu is an award-winning researcher and entrepreneur who has dedicated his career to aerosols and particles research. The stated purpose of the Chair is “to assist the University in recruiting, supporting, and retaining outstanding faculty members in the College of Science and Engineering.” As tribute to Dr. Liu, TSI requested that the Chair support faculty “whose research demonstrates the potential for commercialization.”
TSI and Communities Worldwide
As TSI grew into national and international markets, our community widened. Today, in addition to the U of M, we work closely with colleges, universities, research centers, government agencies, non-profits, and businesses around the world. Many of our engineers are also educators, engaging the next generation of creators and scientists in the classroom—or bringing them onsite for hands-on learning.
At TSI, we feel a responsibility to give back to neighborhoods, cities, and students some of the opportunities that allowed us to grow and flourish. TSI belongs to many of the leading professional organizations and actively participates on many standards committees. We have partnered with prominent national and international schools, organizations, and agencies for both short-term projects and long-term explorations. It has been our privilege to do so.
We look forward to many more years of doing great science in the lab, building great products in the plant, and connecting with outstanding current and future leaders everywhere.
Thank you for being part of the TSI community!
Equipping Industries With Quality Instruments
TSI employees work in product development, manufacturing and customer support in facilities on three continents and using over 425,000 square feet of building space. Our corporate sales and service offices provide regional customer support. Our network of knowledgeable distributors and manufacturers’ representatives provide local support worldwide.
Our locations include:
- Shoreview, Minnesota, USA
- Aachen, Germany
- High Wycombe, Buckinghamshire, UK
- Beijing, China
- Shanghai, China
- Bangalore, India
TSI has three wholly owned subsidiaries:
- DICKEY-john Corporation (Auburn, Illinois), a manufacturer of specialized instrumentation used in public works and agriculture.
- Environmental Systems Corporation (Knoxville, Tennessee), a leading supplier of products and services for outdoor environmental monitoring.
- Tekran Instruments Corporation (Knoxville, Tennessee), a premier supplier of ambient mercury monitoring technology.
International, National and Local
TSI prioritizes participation in societies and standards committees. Our engineers have chaired, sat on committees, or have otherwise been active in pioneering organizations, including:
- ASHRAE - American Society of Heating, Refrigeration, and Air Conditioning Engineers
- ANSI - American National Standards Institute
- AIHA - American Industrial Hygiene Association
- AAAR - American Association for Aerosol Research
- SICCA - Shanghai Indoor Contamination Control Industry Association
- Singapore Accreditation Council