EQA scheme for immission measurement 2013

The results of this interlaboratory test are summarised in the report ‘Ringversuch zur Immissionsmessung 2013’. The competence in measuring ozone (O3) and nitrogen oxides (NO and NO2) was tested. The results of all 11 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 been operating an interlaboratory test facility for immission measurements, at which interlaboratory tests on different air pollutants are carried out at regular intervals.