3mL Cartridge w/500mg Amberlite XAD-7, 50/pk Back Catalog number: 2193 Availability: In the manufacturer's stock Price on request - + Recommended 730004.250 Chromab. columns C18, 6mL, 500mg, BIG 646,77 € 731774 Chromafix HR-XCW (S) 234,91 € 730323 Chromab. columns SB, 6mL, 1000mg 180,06 €