3mL Cartridge w/500mg Amberlite XAD-7, 50/pk Back Catalog number: 2193 Availability: In the manufacturer's stock Price on request - + Recommended 730014G Chromab. columns C18 ec, 6mL, 500mg 238,01 € 12256011 Mega BE-SCX, 1gm 6ml, 30/pk 222,79 € 730107 Chromab. columns SiOH, 6mL, 2000mg 150,05 €