Production of at least two CRMs, and identification of two candidate CRMs

Several candidate reference materials will be tested based on the outcome of the feasibility study (task 2.1). A number of options will be pursued (including water, sediment, biota) and used in the ILS (task 2.3) for further certification through JRCs ‘soft CRM’ program (task 2.6) by the expert labs participating in the ILS resulting in at least two CRMs and several candidate CRMs.