3mL Cartridge w/500mg Amberlite XAD-7, 50/pk Back Catalog number: 2193 Availability: In the manufacturer's stock Price on request - + Recommended 730008 Chromab. columns C18 f, 3mL, 500mg 149,99 € 730073G Chromab. columns SiOH, 3mL, 500mg 301,04 € 730011 Chromab. columns C18 ec, 1mL, 100mg 174,28 €