TSI Inc. 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, chemical analysis, indoor air quality, fluid dynamics, biohazard detection, and even scrap metal sorting and plastics identification. 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.
TESTO, INC. is a world leader in the design, development and manufacture of portable instrumentation. Backed by 60 years of measuring engineering experience our mission is to provide the best quality, service and value in the industry.
Headquartered in Waltham, Massachusetts, Extech Instruments is one of the largest suppliers of test and measurement equipment worldwide. Founded in 1971, Extech is known for its depth and breadth of products and its innovation in providing instruments with unique combinations of features that...
The TSI PORTACOUNT® Pro and Pro+ quantitative fit testers eliminate the guesswork associated with tedious and error-prone qualitative fit test methods. No other fit tester can quantitatively fit test all types of respirators – gas masks, SCBAs, respirators, even N95 disposable... Read more
The TSI Q-TRAK™ Multi-Function IAQ Monitor Model 7575 builds upon trusted technology to provide real-time, simultaneous display of up to five key IAQ parameters including temperature, relative humidity, CO2 and CO quickly and accurately. It also calculates dew point, wet bulb temperature, and... Read more
TSI VELOCICALC® Air Velocity Meters are like having multiple meters for the price of one. These meters simultaneously measure and data log several ventilation parameters using a single probe with multiple sensors. They measure velocity and temperature and calculate flow. The VELOCICALC® Air... Read more