Guide to the demonstration of equivalence of ambient air monitoring methods

This report describes the principles and methodologies to be used for the demonstration of the equivalence of methods other than the EU reference methods. It is intended for use by laboratories nominated by National Competent Authorities (see Directive 2008/50/EC) to perform the tests relevant to the demonstration of equivalence of ambient-air measurement methods. The building blocks of the equivalence demonstration procedure are presented in Figure 1.