Testo is a world leader in the design, development, and manufacture of portable test and measurement instrumentation and solutions. Backed by 60 years of measuring engineering experience, our mission is to provide the best quality, service, and value in the industry. In addition, Testo is recognized as the leading worldwide manufacturer of portable air emission analyzers. Testo has become a major supplier of HVAC/R, airflow, and environmental monitoring instruments for markets as diverse as chemical, food service and production, pharmaceutical and biotechnology, and residential HVAC suppliers.
Testo was founded in 1957 in Lenzkirch, in the Black Forest region of Germany. Today, Testo consists of 37 subsidiary companies around the world, about 3,400 employees research, develop, produce and market for the high-tech company. Testo convinces over 650,000 worldwide customers with highly precise measuring instruments and innovative solutions for the measurement data management of tomorrow.