TIMS FILAMENTS and extraction plates are needed for analyses made by Thermal Ionization mass spectrometry, for various projects within JRC-G.6/METRO, e.g. measurements of HEU samples for DG ENER, measurements for (reconditioned) LSD spike IRMM-1027x,y,z and IRMM-046d mixed spikes. A direct contract with a suitable supplier company is envisioned for 200 boxes of zone refined Re Double Filaments (15 filaments each, alternative packing possible) and 200 boxes of the necessary extraction plates (15 items per box, alternative packing possible).