Testo may not be a widely-known company, but its products are in wide use by everything from chimney sweeps, who use Testo devices to measure flue gas levels, to Airbus staff, who use them to monitor air quality.
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Testo is the global leader in the production of measuring instruments for air-quality and environmental technology. To stay at the top of their field, the mid-sized firm based in Lenzkirch pays special attention to research and development. Report by Anja Kimmig.