DONeX, SPE Clean-up Cartridge, 3ml, pk/500 Back Catalog number: 12793 Availability: In the manufacturer's stock Price on request - + Recommended 730238G Chromab. columns Florisil, 6mL, 500mg 221,64 € 730509 Chromab. columns XTR, 150mL, 37.5g 101,16 € 730249 Chromab. col. Na2SO4/Florisil, 6mL,2/2g 162,79 €