3mL Cartridge w/500mg Amberlite XAD-7, 50/pk Back Catalog number: 2193 Availability: In the manufacturer's stock Price on request - + Recommended 730003.250 Chromab. columns C18, 3mL, 500mg, BIG 594,68 € 731776 Chromafix HR-XCW (L) 341,17 € 731909 Chromafix PS-Mix (S) (PS-H+/PS-OH-) 269,35 €