or
SiliCycle SiliaPrep SPE Cartridges - CleanDRUG, Bed Weight: 100 mg, Volume: 1 mL, Qty: 100 Pk., For Use With: For drugs of abuse applications, Vacuum Manifolds or Automated SPE Equipment, Particle Size: 40 to 63 um, Product Line: SiliaPrep, Sorbent: Propr