or
SiliCycle SiliaPrep SPE Cartridges - Cyano (CN), Bed Weight: 200 mg, Volume: 3 mL, Qty: 50 Pk., For Use With: Extraction of polar organic compounds, Vacuum Manifolds or Automated SPE Equipment, Particle Size: 40 to 63 um, Product Line: SiliaPrep, Sorbent: