This CEN Technical Report describes how the measuring procedures for chemical agents complying with the requirements given in EN 482 and either one of EN 838, EN 1076, EN 13890, EN 13936 and/or the EN 13205 series, as far as applicable, have been chosen. This document refers on the selection of chemical agents and related substance groups and the establishment of corresponding method lists. It describes the evaluation of available measuring procedures in order to select for a particular chemical agent the most appropriate one. This document is also intended to: — provide a means to compare for a given chemical agent a new measuring procedure with those listed in the database GESTIS Analytical methods [2]; — to evaluate and rate a given measuring procedure (from an accepted source) for a given chemical agent not yet selected in the database GESTIS Analytical methods [2].