TESTO, INC. is a world leader in the design, development, and manufacture of portable test and measurement instrumentation. Backed by over 60 years of measuring engineering experience, the company’s mission is to provide the best quality, service, and value in the industry. Being a recognized manufacturer of portable combustion efficiency analyzers and air emission analyzers worldwide, Testo has also become a major supplier of HVAC, critical HVAC, refrigeration, airflow, and environmental monitoring instruments for a variety of markets such as chemical, food service & production, pharmaceutical, biotech, and HVAC.

The company was founded in 1957 in Lenzkirch in the Black Forest region of Germany. The company has been privately owned since its inception. Today, Testo consists of 30 subsidiaries and over 60 agents around the world. The United States subsidiary was founded in 1981. The first product manufactured was a simple electronic thermometer. Today, this product line has expanded to include a large variety of temperature measuring instruments, such as Data Loggers, Air Velocity Meters, Humidity & Dew Point Meters, Refrigeration Analyzers, stack Gas Analyzers and Monitors, pH meters/analyzers, Tachometers, Sound, Pressure and Light meters, and Thermal Imagers.

TESTO Instruments - Leading Innovator in State-of-the-Art Measuring Technology.


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