3mL Cartridge w/500mg Amberlite XAD-7, 50/pk Back Catalog number: 2193 Availability: In the manufacturer's stock Price on request - + Recommended 730061 Chromab. columns CN, 1mL, 100mg 214,21 € 730053 Chromab. columns OH (Diol), 3mL, 500mg 185,23 € 12735 DONeX, SPE Clean-up Cartridge, 3ml, pk/5 Price on request