EQA scheme for immission measurement 2017

Summary of results: The competence in the measurement of ozone (O3) and nitrogen oxides (NO and NO2) was tested. The measurement results of all 12 participating organisations were subjected to the same statistical evaluation procedures as foreseen for the EQASs of the European Reference Laboratories: according to the ‘Protocol for intercomparison exercises’, AQUILA document N37. Since February 2010, the Federal Environment Agency has regularly offered the operators of national and international air quality networks, as well as measuring instrument manufacturers, civil engineers and laboratories for immission measurements the opportunity to check the measurement accuracy of their systems for different air pollutants in interlaboratory tests.