Home :: Sample Preparation :: Solid Phase Extraction (SPE) :: United Chemical Technologies SPE Products :: UCT Enviro-Clean® SPE Cartridges :: Enviro-Clean® Silica :: Enviro-Clean® Silica SPE Cartridges (Heat Treated) :: Enviro Clean Silica SPE Cartridges, 5,000mg, 25mL, pk.20 - (Heat Treated)