DONeX, SPE Clean-up Cartridge, 3ml, pk/500 Back Catalog number: 12793 Availability: In the manufacturer's stock Price on request - + Recommended 17901 CrossTOX® columns for Myc. Scr.for up to 16 toxins Price on request 12334 Column Adapter for 3mL SPE-cartridges or for LCTe Price on request 9372 ELUFIX columns, 10g Florisil & 2g Na2SO4, pk/30 Price on request