Feasibility study for producing a carrot/potato matrix reference material for 11 selected pesticides at EU MRL level: Material processing, homogeneity and stability assessment

► Feasibility study for a pesticide reference material in a vegetable matrix. ► Freeze-dried material is an alternative to frozen material for some pesticides. ► Materials exhibit suitable homogeneity. ► Documented short and mid-term stability when materials are stored frozen.