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) 198,50 € 730261 Chromab. columns C18, 70mL, 10g 204,00 € 731804 Chromafix C18 ec (S) 166,61 €