Home :: Sample Preparation :: Solid Phase Extraction (SPE) :: United Chemical Technologies SPE Products :: UCT Enviro-Clean® SPE Cartridges :: Enviro-Clean® Florisil® :: Enviro-Clean® Fls PR (Florisil®) :: Enviro-Clean Fls PR SPE Cartridges, 820mg, pk.50 - (Large Cartridge)