3mL Cartridge w/500mg Amberlite XAD-7, 50/pk Back Catalog number: 2193 Availability: In the manufacturer's stock Price on request - + Recommended 730014 Chromab. columns C18 ec, 6mL, 500mg 96,00 € 730073.250 Chromab. columns SiOH, 3mL, 500mg BIG 531,41 € 730141 Chromab. columns C18 ec, 6mL, 2000mg 193,71 €