Interlocutory test for immission measurement 2010

The report “Ring Test for Immission Measurement 2010” summarises the results of the first EQA in the new plant of the Federal Environment Agency. 10 operators of immission measuring stations took part in this EQA in autumn 2010. Competence in the measurement of ozone (O3), sulphur dioxide (SO2) and nitrogen oxides (NO and NO2) was tested. The evaluations were carried out in accordance with the criteria for the European air freight reference laboratories. The results from the extensive test series provide evidence of the measurement competence of the measurement operators: More than 88 % of all evaluated results met all requirements with the best possible evaluation. Since February 2010, the Federal Environment Agency has been operating an EQAS for immission measurements. Ring tests are carried out at regular intervals.