12mL Cartridge w/1g SPE Amide-2, 20/pk Back Catalog number: 4827 Availability: In the manufacturer's stock Price on request - + Recommended 731741 Chromafix C4 (M) 203,86 € 730070G Chromab. columns SiOH, 6mL, 500mg, 30 222,49 € 730011ASP Chromab. columns C18 ec, 1mL, 100mg,ASP 275,26 €