12mL Cartridge w/1g SPE Amide-2, 20/pk Back Catalog number: 4827 Availability: In the manufacturer's stock Price on request - + Recommended 5107 60mL Cartridge w/10g SI silica Gel, 12/pk Price on request 12256001 Mega BE-C18, 1gm 6ml, 30/pk 172,29 € 12102064 Bond Elut-CN-E, 50mg 1mL, 100/PK 290,85 €