We are the world leading provider of high performance dust- and gas analyzers based on TDLAS.

With over 40 years of providing rapid, accurate analytical instruments.

Testa designs its measuring systems for experts in the field of emissions and immissions as well as automotive applications.

Strathkelvin Instruments are a leading global supplier of precision respirometry and dissolved oxygen instruments.

Protea Ltd delivers customer-focused solutions for emission, process and research gas monitoring.